Submitted By: Ken Moffat <ken at linuxfromscratch dot org>
Date: 2022-06-22
Initial Package Version: From git 5.15 branch.
Upstream Status: Not applied
Origin: upstreams and gentoo, Douglas, fedora, self, Arch.
Description: Allows this to build and work on BLFS-10.1
Updated on 2021-05-04: add gentoo patch for gcc-11.
Updated on 2021-06-18: remove fix for graphcycles.cc which is now upstream
Updated on 2021-08-13: add fixes to compile and let browsers using it work on glibc-2.34
Updated on 2021-11-22: fixes for qtwebengine-5.15.7.
Updated on 2022-01-13: reduced to what still applies to 5.15.8.
Updated on 2022-06-22: patches from Arch via gentoo to use python3, one modified for BLFS.
The lingering arm and mips patches from an earlier fedora patchset have been dropped.
Include a patch for gcc12.

References to old patches, in the order they were applied, are retained to
assist people wishing to review what has changed compared to previous versions.


First, a patch from gentoo to avoid the build from a git version requiring
git, although the .git directories are still required.

generate_gni.sh: update_readme() runs git at the end of process, prevent it.

Thanks-to: Georgy Yakovlev <gyakovlev@gentoo.org>

--- a/src/3rdparty/chromium/third_party/libvpx/generate_gni.sh	2021-02-07 12:51:49.438514897 +0100
+++ b/src/3rdparty/chromium/third_party/libvpx/generate_gni.sh	2021-02-21 16:23:38.375724515 +0100
@@ -519,8 +519,3 @@
 
 gn format --in-place $BASE_DIR/BUILD.gn
 gn format --in-place $BASE_DIR/libvpx_srcs.gni
-
-cd $BASE_DIR/$LIBVPX_SRC_DIR
-update_readme
-
-cd $BASE_DIR

Second was a patch from fedora to make some web pages render when glibc-2.33
is used. Upstream fixed qtwebengine-5.15.6 slightly differently

Third, a patch from Douglas R. Reno (renodr at linuxfromscratch dot org):

When building qtwebengine where libxml2 has been built before ICU has been 
installed, a build failure will occur because QtWebEngine will attempt to use
it's internal version of libxml2, which *was not* patched against API changes
in ICU-68.1+. These changes involved removing the TRUE and FALSE macros, and
the official documentation states that developers should use 'true' and 'false'
instead, of course making sure that 'stdbool.h' is included so that the compiler
can actually find those boolean values. Since Chromium's internal version of ICU
is older than ours, it's not a problem when building with the internal version 
of ICU. Users who have installed ICU before libxml2 are exempt from running into
this issue. 

diff -Naurp qtwebengine-everywhere-src-5.15.2.orig/src/3rdparty/chromium/third_party/libxml/src/encoding.c qtwebengine-everywhere-src-5.15.2/src/3rdparty/chromium/third_party/libxml/src/encoding.c
--- qtwebengine-everywhere-src-5.15.2.orig/src/3rdparty/chromium/third_party/libxml/src/encoding.c 2020-11-06 19:22:36.000000000 -0600
+++ qtwebengine-everywhere-src-5.15.2/src/3rdparty/chromium/third_party/libxml/src/encoding.c 2020-12-08 19:39:00.607894718 -0600
@@ -44,7 +44,7 @@
 #endif
 #include <libxml/globals.h>
 #include <libxml/xmlerror.h>
-
+#include <stdbool.h>
 #include "buf.h"
 #include "enc.h"

@@ -1893,7 +1893,7 @@ xmlUconvWrapper(uconv_t *cd, int toUnico
     *inlen = ucv_in - (const char*) in;
     *outlen = ucv_out - (char *) out;
     if (U_SUCCESS(err)) {
-        /* reset pivot buf if this is the last call for input (flush==TRUE) */
+        /* reset pivot buf if this is the last call for input (flush==true) */
         if (flush)
             cd->pivot_source = cd->pivot_target = cd->pivot_buf;
         return 0;
@@ -1958,7 +1958,7 @@ xmlEncOutputChunk(xmlCharEncodingHandler
 #ifdef LIBXML_ICU_ENABLED
     else if (handler->uconv_out != NULL) {
         ret = xmlUconvWrapper(handler->uconv_out, 0, out, outlen, in, inlen,
-                              TRUE);
+                              true);
     }
 #endif /* LIBXML_ICU_ENABLED */
     else { 

Fourth, patch from gentoo to allow it to build with gcc-11 where some
less-used headers such as <limits> have been removed from the C++
standard library headers which used to include them, and must now be
included where needed. [https://gcc.gnu.org/gcc-11/porting_to.html]

diff --git a/src/3rdparty/chromium/third_party/angle/src/libANGLE/HandleAllocator.cpp b/src/3rdparty/chromium/third_party/angle/src/libANGLE/HandleAllocator.cpp
index 013f1dfb2..3ce63c192 100644
--- a/src/3rdparty/chromium/third_party/angle/src/libANGLE/HandleAllocator.cpp
+++ b/src/3rdparty/chromium/third_party/angle/src/libANGLE/HandleAllocator.cpp
@@ -9,6 +9,7 @@
 
 #include "libANGLE/HandleAllocator.h"
 
+#include <limits>
 #include <algorithm>
 #include <functional>
 
diff --git a/src/3rdparty/chromium/third_party/perfetto/src/trace_processor/containers/string_pool.cc b/src/3rdparty/chromium/third_party/perfetto/src/trace_processor/containers/string_pool.cc
index fd651958f..1e8d0606c 100644
--- a/src/3rdparty/chromium/third_party/perfetto/src/trace_processor/containers/string_pool.cc
+++ b/src/3rdparty/chromium/third_party/perfetto/src/trace_processor/containers/string_pool.cc
@@ -14,9 +14,9 @@
  * limitations under the License.
  */
 
+#include <limits>
 #include "src/trace_processor/containers/string_pool.h"
 
-#include <limits>
 
 #include "perfetto/base/logging.h"
 #include "perfetto/ext/base/utils.h"
diff --git a/src/3rdparty/chromium/third_party/perfetto/src/trace_processor/db/column.cc b/src/3rdparty/chromium/third_party/perfetto/src/trace_processor/db/column.cc
index 00496b335..0dccfeb8a 100644
--- a/src/3rdparty/chromium/third_party/perfetto/src/trace_processor/db/column.cc
+++ b/src/3rdparty/chromium/third_party/perfetto/src/trace_processor/db/column.cc
@@ -14,6 +14,7 @@
  * limitations under the License.
  */
 
+#include <limits>
 #include "src/trace_processor/db/column.h"
 
 #include "src/trace_processor/db/compare.h"
diff --git a/src/3rdparty/chromium/third_party/perfetto/src/trace_processor/types/variadic.cc b/src/3rdparty/chromium/third_party/perfetto/src/trace_processor/types/variadic.cc
index 837bfeba9..cdd56817d 100644
--- a/src/3rdparty/chromium/third_party/perfetto/src/trace_processor/types/variadic.cc
+++ b/src/3rdparty/chromium/third_party/perfetto/src/trace_processor/types/variadic.cc
@@ -14,6 +14,7 @@
  * limitations under the License.
  */
 
+#include <limits>
 #include "src/trace_processor/types/variadic.h"
 
 namespace perfetto {
diff --git a/src/3rdparty/chromium/ui/accessibility/platform/ax_platform_atk_hyperlink.cc b/src/3rdparty/chromium/ui/accessibility/platform/ax_platform_atk_hyperlink.cc
index be91def6b..73f202356 100644
--- a/src/3rdparty/chromium/ui/accessibility/platform/ax_platform_atk_hyperlink.cc
+++ b/src/3rdparty/chromium/ui/accessibility/platform/ax_platform_atk_hyperlink.cc
@@ -245,7 +245,7 @@ static void AXPlatformAtkHyperlinkInit(AXPlatformAtkHyperlink* self, gpointer) {
 }
 
 GType ax_platform_atk_hyperlink_get_type() {
-  static volatile gsize type_volatile = 0;
+  static gsize type_volatile = 0;
 
   AXPlatformNodeAuraLinux::EnsureGTypeInit();
 
diff --git a/src/3rdparty/chromium/ui/accessibility/platform/ax_platform_node_auralinux.cc b/src/3rdparty/chromium/ui/accessibility/platform/ax_platform_node_auralinux.cc
index 04125c6fd..6c64e5d8e 100644
--- a/src/3rdparty/chromium/ui/accessibility/platform/ax_platform_node_auralinux.cc
+++ b/src/3rdparty/chromium/ui/accessibility/platform/ax_platform_node_auralinux.cc
@@ -2274,7 +2274,7 @@ void ClassInit(gpointer class_pointer, gpointer /* class_data */) {
 GType GetType() {
   AXPlatformNodeAuraLinux::EnsureGTypeInit();
 
-  static volatile gsize type_volatile = 0;
+  static gsize type_volatile = 0;
   if (g_once_init_enter(&type_volatile)) {
     static const GTypeInfo type_info = {
         sizeof(AXPlatformNodeAuraLinuxClass),  // class_size
diff --git a/src/3rdparty/chromium/ui/gtk/gtk_key_bindings_handler.cc b/src/3rdparty/chromium/ui/gtk/gtk_key_bindings_handler.cc
index c663a2074..38a342484 100644
--- a/src/3rdparty/chromium/ui/gtk/gtk_key_bindings_handler.cc
+++ b/src/3rdparty/chromium/ui/gtk/gtk_key_bindings_handler.cc
@@ -141,7 +141,7 @@ void GtkKeyBindingsHandler::HandlerClassInit(HandlerClass* klass) {
 }
 
 GType GtkKeyBindingsHandler::HandlerGetType() {
-  static volatile gsize type_id_volatile = 0;
+  static gsize type_id_volatile = 0;
   if (g_once_init_enter(&type_id_volatile)) {
     GType type_id = g_type_register_static_simple(
         GTK_TYPE_TEXT_VIEW, g_intern_static_string("GtkKeyBindingsHandler"),
--- a/src/3rdparty/chromium/components/bookmarks/browser/bookmark_expanded_state_tracker.cc
+++ b/src/3rdparty/chromium/components/bookmarks/browser/bookmark_expanded_state_tracker.cc
@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include <cstddef>
 #include "components/bookmarks/browser/bookmark_expanded_state_tracker.h"
 
 #include <stdint.h>
diff --git a/src/3rdparty/chromium/components/bookmarks/browser/base_bookmark_model_observer.cc b/src/3rdparty/chromium/components/bookmarks/browser/base_bookmark_model_observer.cc
index 657a3c96b..ad641a082 100644
--- a/src/3rdparty/chromium/components/bookmarks/browser/base_bookmark_model_observer.cc
+++ b/src/3rdparty/chromium/components/bookmarks/browser/base_bookmark_model_observer.cc
@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include <cstddef>
+
 #include "components/bookmarks/browser/base_bookmark_model_observer.h"
 
 namespace bookmarks {
 
Fifth were some fixes from upstream abseil to build with glibc-2.34.
The first part has been fixed slightly differently in chromium in
qtwebengne-5.15.8, I assume the remainder are not actually needed for
chromium.

Sixth was a patch from Fedora to compile breakpad on glibc-2.34, fixed
slightly differently in chromium in qtwebengine-5.15.8

Seventh: a patch from fedora to handle time64 syscalls, fixed up to apply
to 5.15.7 (parts were upstream but in a slightly different order).
I have now removed the arm_linux_syscalls.h and mips_linux_syscalls.h
changes since BLFS cannot use these.

diff -ur a/src/3rdparty/chromium/sandbox/linux/seccomp-bpf-helpers/baseline_policy.cc b/src/3rdparty/chromium/sandbox/linux/seccomp-bpf-helpers/baseline_policy.cc
--- a/src/3rdparty/chromium/sandbox/linux/seccomp-bpf-helpers/baseline_policy.cc	2021-11-21 05:26:12.779893741 +0000
+++ b/src/3rdparty/chromium/sandbox/linux/seccomp-bpf-helpers/baseline_policy.cc	2021-11-21 05:48:06.855720781 +0000
@@ -158,7 +158,15 @@
     return Allow();
 #endif
 
-  if (SyscallSets::IsClockApi(sysno)) {
+  if (sysno == __NR_clock_gettime || sysno == __NR_clock_nanosleep
+#if defined(__NR_clock_gettime64)
+                                  || sysno == __NR_clock_gettime64
+#endif
+#if defined(__NR_clock_nanosleep_time64)
+                                  || sysno == __NR_clock_nanosleep_time64
+#endif
+  ) {
+
     return RestrictClockID();
   }
 
Eighth - fix the build with gcc-12.
Originally a sed, by Pierre Labastie.

diff -Naur a/src/3rdparty/chromium/third_party/skia/src/utils/SkParseColor.cpp b/src/3rdparty/chromium/third_party/skia/src/utils/SkParseColor.cpp
--- a/src/3rdparty/chromium/third_party/skia/src/utils/SkParseColor.cpp	2022-05-23 12:38:40.000000000 +0100
+++ b/src/3rdparty/chromium/third_party/skia/src/utils/SkParseColor.cpp	2022-06-22 14:05:40.255461707 +0100
@@ -6,6 +6,7 @@
  */
 
 
+#include <vector>
 #include "include/utils/SkParse.h"
 
 static constexpr const char* gColorNames[] = {

Ninth - patch from Arch, via gentoo, to convert python2 code to
python3.  In as much as parts of this change python2 to python, but
BLFS uses python3, it seems not all of this is necessarily needed.

From 3c26c6214f675d170718df6bd54e61743620166a Mon Sep 17 00:00:00 2001
From: Antonio Rojas <arojas@archlinux.org>
Date: Sat, 16 Oct 2021 20:17:35 +0000
Subject: [PATCH 1/3] Build without python 2

---
 chromium/build/print_python_deps.py           |  6 +-
 .../protobufs/binary_proto_generator.py       |  8 +-
 .../tracing/generate_trace_viewer_grd.py      |  2 +-
 chromium/mojo/public/tools/bindings/BUILD.gn  |  2 +
 .../tools/bindings/gen_data_files_list.py     |  8 +-
 .../generators/mojom_java_generator.py        |  4 +
 .../tools/mojom/mojom/generate/generator.py   | 14 ++--
 .../tools/mojom/mojom/generate/module.py      |  3 +-
 .../mojom/mojom/generate/template_expander.py | 12 +--
 .../scripts/bind_gen/blink_v8_bridge.py       |  6 +-
 .../scripts/bind_gen/callback_interface.py    |  2 +-
 .../bindings/scripts/bind_gen/code_node.py    | 10 +--
 .../bindings/scripts/bind_gen/codegen_expr.py | 15 ++--
 .../scripts/bind_gen/codegen_format.py        |  2 +-
 .../scripts/bind_gen/codegen_utils.py         |  2 +-
 .../bindings/scripts/bind_gen/dictionary.py   |  2 +-
 .../bindings/scripts/bind_gen/interface.py    | 82 +++++++++++--------
 .../scripts/bind_gen/mako_renderer.py         |  2 +-
 .../bindings/scripts/bind_gen/style_format.py |  9 +-
 .../bindings/scripts/bind_gen/task_queue.py   |  5 +-
 .../bindings/scripts/code_generator.py        | 10 +++
 .../scripts/generate_origin_trial_features.py |  4 +-
 .../bindings/scripts/idl_definitions.py       |  8 +-
 .../renderer/bindings/scripts/idl_reader.py   |  4 +-
 .../renderer/bindings/scripts/idl_types.py    |  2 +-
 .../renderer/bindings/scripts/utilities.py    | 28 +++----
 .../renderer/bindings/scripts/v8_interface.py |  9 +-
 .../renderer/bindings/scripts/v8_methods.py   |  4 +
 .../renderer/bindings/scripts/v8_utilities.py |  2 +-
 .../scripts/web_idl/callback_interface.py     | 12 +--
 .../bindings/scripts/web_idl/database.py      |  2 +-
 .../bindings/scripts/web_idl/exposure.py      |  5 +-
 .../bindings/scripts/web_idl/function_like.py | 28 +++----
 .../bindings/scripts/web_idl/idl_compiler.py  | 21 ++---
 .../bindings/scripts/web_idl/interface.py     | 45 +++++-----
 .../bindings/scripts/web_idl/ir_builder.py    | 29 ++++---
 .../bindings/scripts/web_idl/make_copy.py     |  7 ++
 .../bindings/scripts/web_idl/namespace.py     | 12 +--
 .../bindings/templates/dictionary_v8.cc.tmpl  |  8 +-
 .../scripts/core/css/make_style_shorthands.py | 23 +++---
 .../properties/make_css_property_instances.py |  4 +-
 .../blink/renderer/build/scripts/gperf.py     |  2 +-
 .../blink/renderer/build/scripts/in_file.py   |  2 +-
 .../renderer/build/scripts/in_generator.py    |  5 ++
 .../build/scripts/make_runtime_features.py    |  2 +-
 .../scripts/templates/element_factory.cc.tmpl |  4 +-
 .../templates/element_type_helpers.cc.tmpl    |  4 +-
 .../templates/element_type_helpers.h.tmpl     |  2 +-
 .../build/scripts/templates/macros.tmpl       |  4 +-
 .../templates/make_qualified_names.h.tmpl     |  4 +-
 .../dawn/generator/generator_lib.py           |  4 +
 .../devtools-frontend/src/BUILD.gn            |  2 +
 .../scripts/build/build_inspector_overlay.py  |  3 +-
 .../build/build_release_applications.py       |  9 +-
 .../scripts/build/generate_devtools_grd.py    |  4 +-
 .../src/scripts/build/modular_build.py        |  6 +-
 chromium/third_party/jinja2/tests.py          |  2 +-
 chromium/tools/metrics/ukm/gen_builders.py    |  5 +-
 .../ui/ozone/generate_constructor_list.py     | 13 ++-
 .../ui/ozone/generate_ozone_platform_list.py  | 26 ++++--
 60 files changed, 334 insertions(+), 232 deletions(-)

diff --git a/chromium/build/print_python_deps.py b/chromium/build/print_python_deps.py
index fd29c0972c9..69af247094b 100755
--- a/src/3rdparty/chromium/chromium/build/print_python_deps.py
+++ b/src/3rdparty/chromium/build/print_python_deps.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python2.7
+#!/usr/bin/python
 # Copyright 2016 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
@@ -80,7 +80,7 @@ def _GetTargetPythonVersion(module):
   if shebang.startswith('#!'):
     # Examples:
     # '#!/usr/bin/python'
-    # '#!/usr/bin/python2.7'
+    # '#!/usr/bin/python'
     # '#!/usr/bin/python3'
     # '#!/usr/bin/env python3'
     # '#!/usr/bin/env vpython'
@@ -152,7 +152,7 @@ def main():
 
   # Trybots run with vpython as default Python, but with a different config
   # from //.vpython. To make the is_vpython test work, and to match the behavior
-  # of dev machines, the shebang line must be run with python2.7.
+  # of dev machines, the shebang line must be run with python.
   #
   # E.g. $HOME/.vpython-root/dd50d3/bin/python
   # E.g. /b/s/w/ir/cache/vpython/ab5c79/bin/python
diff --git a/chromium/components/resources/protobufs/binary_proto_generator.py b/chromium/components/resources/protobufs/binary_proto_generator.py
index 7422ead9697..16365515f26 100755
--- a/src/3rdparty/chromium/chromium/components/resources/protobufs/binary_proto_generator.py
+++ b/src/3rdparty/chromium/components/resources/protobufs/binary_proto_generator.py
@@ -7,7 +7,7 @@
  Converts a given ASCII proto into a binary resource.
 
 """
-
+from __future__ import print_function
 import abc
 import imp
 import optparse
@@ -196,12 +196,12 @@ class BinaryProtoGenerator:
     self._ImportProtoModules(opts.path)
 
     if not self.VerifyArgs(opts):
-      print "Wrong arguments"
+      print("Wrong arguments")
       return 1
 
     try:
       self._GenerateBinaryProtos(opts)
     except Exception as e:
-      print "ERROR: Failed to render binary version of %s:\n  %s\n%s" % (
-          opts.infile, str(e), traceback.format_exc())
+      print("ERROR: Failed to render binary version of %s:\n  %s\n%s" %
+            (opts.infile, str(e), traceback.format_exc()))
       return 1
diff --git a/chromium/content/browser/tracing/generate_trace_viewer_grd.py b/chromium/content/browser/tracing/generate_trace_viewer_grd.py
index 037f9497dc2..be393d21f90 100755
--- a/src/3rdparty/chromium/chromium/content/browser/tracing/generate_trace_viewer_grd.py
+++ b/src/3rdparty/chromium/content/browser/tracing/generate_trace_viewer_grd.py
@@ -74,7 +74,7 @@ def main(argv):
   for filename in parsed_args.source_files:
     add_file_to_grd(doc, os.path.basename(filename))
 
-  with open(parsed_args.output_filename, 'w') as output_file:
+  with open(parsed_args.output_filename, 'wb') as output_file:
     output_file.write(doc.toxml(encoding='UTF-8'))
 
 
diff --git a/chromium/mojo/public/tools/bindings/BUILD.gn b/chromium/mojo/public/tools/bindings/BUILD.gn
index fc04b5dd0b1..708958e438b 100644
--- a/src/3rdparty/chromium/chromium/mojo/public/tools/bindings/BUILD.gn
+++ b/src/3rdparty/chromium/mojo/public/tools/bindings/BUILD.gn
@@ -2,9 +2,11 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import("//build/config/python.gni")
 import("//mojo/public/tools/bindings/mojom.gni")
 import("//third_party/jinja2/jinja2.gni")
 
+# TODO(crbug.com/1194274): Investigate nondeterminism in Py3 builds.
 action("precompile_templates") {
   sources = mojom_generator_sources
   sources += [
diff --git a/chromium/mojo/public/tools/bindings/gen_data_files_list.py b/chromium/mojo/public/tools/bindings/gen_data_files_list.py
index 79c9e50efce..8b78d092418 100644
--- a/src/3rdparty/chromium/chromium/mojo/public/tools/bindings/gen_data_files_list.py
+++ b/src/3rdparty/chromium/mojo/public/tools/bindings/gen_data_files_list.py
@@ -18,7 +18,6 @@ import os
 import re
 import sys
 
-from cStringIO import StringIO
 from optparse import OptionParser
 
 sys.path.insert(
@@ -41,12 +40,9 @@ def main():
   pattern = re.compile(options.pattern)
   files = [f for f in os.listdir(options.directory) if pattern.match(f)]
 
-  stream = StringIO()
-  for f in files:
-    print(f, file=stream)
+  contents = '\n'.join(f for f in files) + '\n'
+  WriteFile(contents, options.output)
 
-  WriteFile(stream.getvalue(), options.output)
-  stream.close()
 
 if __name__ == '__main__':
   sys.exit(main())
diff --git a/chromium/mojo/public/tools/bindings/generators/mojom_java_generator.py b/chromium/mojo/public/tools/bindings/generators/mojom_java_generator.py
index 96b2fdfae0c..00b9dccd00c 100644
--- a/src/3rdparty/chromium/chromium/mojo/public/tools/bindings/generators/mojom_java_generator.py
+++ b/src/3rdparty/chromium/mojo/public/tools/bindings/generators/mojom_java_generator.py
@@ -25,6 +25,10 @@ sys.path.append(os.path.join(os.path.dirname(__file__), os.pardir,
                              'build', 'android', 'gyp'))
 from util import build_utils
 
+# TODO(crbug.com/1174969): Remove this once Python2 is obsoleted.
+if sys.version_info.major != 2:
+  basestring = str
+  long = int
 
 GENERATOR_PREFIX = 'java'
 
diff --git a/chromium/mojo/public/tools/mojom/mojom/generate/generator.py b/chromium/mojo/public/tools/mojom/mojom/generate/generator.py
index de62260a5c9..4a1c73fcf82 100644
--- a/src/3rdparty/chromium/chromium/mojo/public/tools/mojom/mojom/generate/generator.py
+++ b/src/3rdparty/chromium/mojo/public/tools/mojom/mojom/generate/generator.py
@@ -136,9 +136,14 @@ class Stylizer(object):
 
 def WriteFile(contents, full_path):
   # If |contents| is same with the file content, we skip updating.
+  if not isinstance(contents, bytes):
+    data = contents.encode('utf8')
+  else:
+    data = contents
+
   if os.path.isfile(full_path):
     with open(full_path, 'rb') as destination_file:
-      if destination_file.read() == contents:
+      if destination_file.read() == data:
         return
 
   # Make sure the containing directory exists.
@@ -146,11 +151,8 @@ def WriteFile(contents, full_path):
   fileutil.EnsureDirectoryExists(full_dir)
 
   # Dump the data to disk.
-  with open(full_path, "wb") as f:
-    if not isinstance(contents, bytes):
-      f.write(contents.encode('utf-8'))
-    else:
-      f.write(contents)
+  with open(full_path, 'wb') as f:
+    f.write(data)
 
 
 def AddComputedData(module):
diff --git a/chromium/mojo/public/tools/mojom/mojom/generate/module.py b/chromium/mojo/public/tools/mojom/mojom/generate/module.py
index ebbc9b322ea..3d026429bbc 100644
--- a/src/3rdparty/chromium/chromium/mojo/public/tools/mojom/mojom/generate/module.py
+++ b/src/3rdparty/chromium/mojo/public/tools/mojom/mojom/generate/module.py
@@ -398,7 +398,8 @@ class Field(object):
 
 
 class StructField(Field):
-  pass
+  def __hash__(self):
+    return super(Field, self).__hash__()
 
 
 class UnionField(Field):
diff --git a/chromium/mojo/public/tools/mojom/mojom/generate/template_expander.py b/chromium/mojo/public/tools/mojom/mojom/generate/template_expander.py
index 7a300560246..8d9e26fb7f6 100644
--- a/src/3rdparty/chromium/chromium/mojo/public/tools/mojom/mojom/generate/template_expander.py
+++ b/src/3rdparty/chromium/mojo/public/tools/mojom/mojom/generate/template_expander.py
@@ -75,9 +75,9 @@ def PrecompileTemplates(generator_modules, output_dir):
                 os.path.dirname(module.__file__), generator.GetTemplatePrefix())
         ]))
     jinja_env.filters.update(generator.GetFilters())
-    jinja_env.compile_templates(
-        os.path.join(output_dir, "%s.zip" % generator.GetTemplatePrefix()),
-        extensions=["tmpl"],
-        zip="stored",
-        py_compile=True,
-        ignore_errors=False)
+    jinja_env.compile_templates(os.path.join(
+        output_dir, "%s.zip" % generator.GetTemplatePrefix()),
+                                extensions=["tmpl"],
+                                zip="stored",
+                                py_compile=sys.version_info.major < 3,
+                                ignore_errors=False)
diff --git a/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/blink_v8_bridge.py b/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/blink_v8_bridge.py
index 3225ecca6e4..fc078d31b55 100644
--- a/src/3rdparty/chromium/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/blink_v8_bridge.py
+++ b/src/3rdparty/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/blink_v8_bridge.py
@@ -344,7 +344,7 @@ def make_default_value_expr(idl_type, default_value):
     """
     assert default_value.is_type_compatible_with(idl_type)
 
-    class DefaultValueExpr:
+    class DefaultValueExpr(object):
         _ALLOWED_SYMBOLS_IN_DEPS = ("isolate")
 
         def __init__(self, initializer_expr, initializer_deps,
@@ -502,7 +502,7 @@ def make_v8_to_blink_value(blink_var_name,
     assert isinstance(blink_var_name, str)
     assert isinstance(v8_value_expr, str)
     assert isinstance(idl_type, web_idl.IdlType)
-    assert (argument_index is None or isinstance(argument_index, (int, long)))
+    assert (argument_index is None or isinstance(argument_index, int))
     assert (default_value is None
             or isinstance(default_value, web_idl.LiteralConstant))
 
@@ -622,7 +622,7 @@ def make_v8_to_blink_value_variadic(blink_var_name, v8_array,
     """
     assert isinstance(blink_var_name, str)
     assert isinstance(v8_array, str)
-    assert isinstance(v8_array_start_index, (int, long))
+    assert isinstance(v8_array_start_index, int)
     assert isinstance(idl_type, web_idl.IdlType)
 
     pattern = ("auto&& ${{{_1}}} = "
diff --git a/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/callback_interface.py b/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/callback_interface.py
index 4a6df513068..8b51f23a409 100644
--- a/src/3rdparty/chromium/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/callback_interface.py
+++ b/src/3rdparty/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/callback_interface.py
@@ -177,7 +177,7 @@ def generate_callback_interface(callback_interface_identifier):
          prop_install_mode=PropInstallMode.UNCONDITIONAL,
          trampoline_var_name=None,
          attribute_entries=[],
-         constant_entries=filter(is_unconditional, constant_entries),
+         constant_entries=list(filter(is_unconditional, constant_entries)),
          exposed_construct_entries=[],
          operation_entries=[])
     (install_interface_template_decl, install_interface_template_def,
diff --git a/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/code_node.py b/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/code_node.py
index 52972fefe20..e5ae9d9629e 100644
--- a/src/3rdparty/chromium/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/code_node.py
+++ b/src/3rdparty/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/code_node.py
@@ -503,13 +503,13 @@ class CompositeNode(CodeNode):
         gensym_kwargs = {}
         template_vars = {}
         for arg in args:
-            assert isinstance(arg, (CodeNode, int, long, str))
+            assert isinstance(arg, (CodeNode, int, str))
             gensym = CodeNode.gensym()
             gensym_args.append("${{{}}}".format(gensym))
             template_vars[gensym] = arg
         for key, value in kwargs.items():
-            assert isinstance(key, (int, long, str))
-            assert isinstance(value, (CodeNode, int, long, str))
+            assert isinstance(key, (int, str))
+            assert isinstance(value, (CodeNode, int, str))
             gensym = CodeNode.gensym()
             gensym_kwargs[key] = "${{{}}}".format(gensym)
             template_vars[gensym] = value
@@ -602,7 +602,7 @@ class ListNode(CodeNode):
     def insert(self, index, node):
         if node is None:
             return
-        assert isinstance(index, (int, long))
+        assert isinstance(index, int)
         assert isinstance(node, CodeNode)
         assert node.outer is None and node.prev is None
 
@@ -721,7 +721,7 @@ class SymbolScopeNode(SequenceNode):
             if not scope_chains:
                 return counts
 
-            self_index = iter(scope_chains).next().index(self)
+            self_index = next(iter(scope_chains)).index(self)
             scope_chains = map(
                 lambda scope_chain: scope_chain[self_index + 1:], scope_chains)
             scope_to_likeliness = {}
diff --git a/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/codegen_expr.py b/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/codegen_expr.py
index a229a6c71c9..5fa288dabf2 100644
--- a/src/3rdparty/chromium/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/codegen_expr.py
+++ b/src/3rdparty/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/codegen_expr.py
@@ -109,7 +109,7 @@ def expr_and(terms):
 
     if any(term.is_always_false for term in terms):
         return _Expr(False)
-    terms = filter(lambda x: not x.is_always_true, terms)
+    terms = list(filter(lambda x: not x.is_always_true, terms))
     if not terms:
         return _Expr(True)
     if len(terms) == 1:
@@ -124,7 +124,7 @@ def expr_or(terms):
 
     if any(term.is_always_true for term in terms):
         return _Expr(True)
-    terms = filter(lambda x: not x.is_always_false, terms)
+    terms = list(filter(lambda x: not x.is_always_false, terms))
     if not terms:
         return _Expr(False)
     if len(terms) == 1:
@@ -222,7 +222,7 @@ def expr_from_exposure(exposure,
     elif exposure.only_in_secure_contexts is False:
         secure_context_term = _Expr(True)
     else:
-        terms = map(ref_enabled, exposure.only_in_secure_contexts)
+        terms = list(map(ref_enabled, exposure.only_in_secure_contexts))
         secure_context_term = expr_or(
             [_Expr("${is_in_secure_context}"),
              expr_not(expr_and(terms))])
@@ -275,10 +275,11 @@ def expr_from_exposure(exposure,
 
     # [ContextEnabled]
     if exposure.context_enabled_features:
-        terms = map(
-            lambda feature: _Expr(
-                "${{context_feature_settings}}->is{}Enabled()".format(
-                    feature)), exposure.context_enabled_features)
+        terms = list(
+            map(
+                lambda feature: _Expr(
+                    "${{context_feature_settings}}->is{}Enabled()".format(
+                        feature)), exposure.context_enabled_features))
         context_enabled_terms.append(
             expr_and([_Expr("${context_feature_settings}"),
                       expr_or(terms)]))
diff --git a/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/codegen_format.py b/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/codegen_format.py
index 87d26eec3ca..f3e9d38247e 100644
--- a/src/3rdparty/chromium/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/codegen_format.py
+++ b/src/3rdparty/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/codegen_format.py
@@ -23,7 +23,7 @@ class _TemplateFormatter(string.Formatter):
         self._template_formatter_indexing_count_ = 0
 
     def get_value(self, key, args, kwargs):
-        if isinstance(key, (int, long)):
+        if isinstance(key, int):
             return args[key]
         assert isinstance(key, str)
         if not key:
diff --git a/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/codegen_utils.py b/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/codegen_utils.py
index 2bcc4fed49a..e72282aa696 100644
--- a/src/3rdparty/chromium/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/codegen_utils.py
+++ b/src/3rdparty/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/codegen_utils.py
@@ -116,4 +116,4 @@ def write_code_node_to_file(code_node, filepath):
 #                               stderr=format_result.error_message))
 #
 #    web_idl.file_io.write_to_file_if_changed(filepath, format_result.contents)
-    web_idl.file_io.write_to_file_if_changed(filepath, rendered_text)
+    web_idl.file_io.write_to_file_if_changed(filepath, rendered_text.encode('utf-8'))
diff --git a/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/dictionary.py b/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/dictionary.py
index b39f0100410..4d68202296b 100644
--- a/src/3rdparty/chromium/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/dictionary.py
+++ b/src/3rdparty/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/dictionary.py
@@ -993,7 +993,7 @@ def make_dict_trace_func(cg_context):
         _2 = _blink_member_name(member).value_var
         return TextNode(_format(pattern, _1=_1, _2=_2))
 
-    body.extend(map(make_trace_member_node, own_members))
+    body.extend(list(map(make_trace_member_node, own_members)))
     body.append(TextNode("BaseClass::Trace(visitor);"))
 
     return func_decl, func_def
diff --git a/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/interface.py b/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/interface.py
index 10ff30656ad..bfdf7128aac 100644
--- a/src/3rdparty/chromium/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/interface.py
+++ b/src/3rdparty/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/interface.py
@@ -582,7 +582,7 @@ def _make_blink_api_call(code_node,
                          overriding_args=None):
     assert isinstance(code_node, SymbolScopeNode)
     assert isinstance(cg_context, CodeGenContext)
-    assert num_of_args is None or isinstance(num_of_args, (int, long))
+    assert num_of_args is None or isinstance(num_of_args, int)
     assert (overriding_args is None
             or (isinstance(overriding_args, (list, tuple))
                 and all(isinstance(arg, str) for arg in overriding_args)))
@@ -1196,8 +1196,10 @@ def make_overload_dispatcher(cg_context):
             did_use_break = did_use_break or can_fail
 
         conditional = expr_or(
-            map(lambda item: expr_from_exposure(item.function_like.exposure),
-                items))
+            list(
+                map(
+                    lambda item: expr_from_exposure(item.function_like.exposure
+                                                    ), items)))
         if not conditional.is_always_true:
             node = CxxUnlikelyIfNode(cond=conditional, body=node)
 
@@ -4642,7 +4644,7 @@ class _PropEntryConstructorGroup(_PropEntryBase):
     def __init__(self, is_context_dependent, exposure_conditional, world,
                  constructor_group, ctor_callback_name, ctor_func_length):
         assert isinstance(ctor_callback_name, str)
-        assert isinstance(ctor_func_length, (int, long))
+        assert isinstance(ctor_func_length, int)
 
         _PropEntryBase.__init__(self, is_context_dependent,
                                 exposure_conditional, world, constructor_group)
@@ -4670,7 +4672,7 @@ class _PropEntryOperationGroup(_PropEntryBase):
                  op_func_length,
                  no_alloc_direct_callback_name=None):
         assert isinstance(op_callback_name, str)
-        assert isinstance(op_func_length, (int, long))
+        assert isinstance(op_func_length, int)
 
         _PropEntryBase.__init__(self, is_context_dependent,
                                 exposure_conditional, world, operation_group)
@@ -5175,9 +5177,9 @@ def make_install_interface_template(cg_context, function_name, class_name, api_c
     ])
 
     if class_like.identifier == "CSSStyleDeclaration":
-        css_properties = filter(
-            lambda attr: "CSSProperty" in attr.extended_attributes,
-            class_like.attributes)
+        css_properties = list(
+            filter(lambda attr: "CSSProperty" in attr.extended_attributes,
+                   class_like.attributes))
         if css_properties:
             prop_name_list = "".join(
                 map(lambda attr: "\"{}\", ".format(attr.identifier),
@@ -5567,8 +5569,8 @@ ${instance_object} = ${v8_context}->Global()->GetPrototype().As<v8::Object>();\
             "V8DOMConfiguration::InstallConstants(${isolate}, "
             "${interface_template}, ${prototype_template}, "
             "kConstantCallbackTable, base::size(kConstantCallbackTable));")
-    constant_callback_entries = filter(lambda entry: entry.const_callback_name,
-                                       constant_entries)
+    constant_callback_entries = list(filter(lambda entry: entry.const_callback_name,
+                                       constant_entries))
     install_properties(table_name, constant_callback_entries,
                        _make_constant_callback_registration_table,
                        installer_call_text)
@@ -5584,8 +5586,8 @@ ${instance_object} = ${v8_context}->Global()->GetPrototype().As<v8::Object>();\
             "V8DOMConfiguration::InstallConstants(${isolate}, "
             "${interface_template}, ${prototype_template}, "
             "kConstantValueTable, base::size(kConstantValueTable));")
-    constant_value_entries = filter(
-        lambda entry: not entry.const_callback_name, constant_entries)
+    constant_value_entries = list(filter(
+        lambda entry: not entry.const_callback_name, constant_entries))
     install_properties(table_name, constant_value_entries,
                        _make_constant_value_registration_table,
                        installer_call_text)
@@ -6336,8 +6338,8 @@ def make_v8_context_snapshot_api(cg_context, component, attribute_entries,
     assert isinstance(component, web_idl.Component)
 
     derived_interfaces = cg_context.interface.deriveds
-    derived_names = map(lambda interface: interface.identifier,
-                        derived_interfaces)
+    derived_names = list(
+        map(lambda interface: interface.identifier, derived_interfaces))
     derived_names.append(cg_context.interface.identifier)
     if not ("Window" in derived_names or "HTMLDocument" in derived_names):
         return None, None
@@ -6411,9 +6413,11 @@ def _make_v8_context_snapshot_get_reference_table_function(
     collect_callbacks(named_properties_object_callback_defs)
     collect_callbacks(cross_origin_property_callback_defs)
 
-    entry_nodes = map(
-        lambda name: TextNode("reinterpret_cast<intptr_t>({}),".format(name)),
-        filter(None, callback_names))
+    entry_nodes = list(
+        map(
+            lambda name: TextNode("reinterpret_cast<intptr_t>({}),".format(name
+                                                                           )),
+            filter(None, callback_names)))
     table_node = ListNode([
         TextNode("using namespace ${class_name}Callbacks;"),
         TextNode("static const intptr_t kReferenceTable[] = {"),
@@ -6451,10 +6455,11 @@ def _make_v8_context_snapshot_install_props_per_context_function(
         class_name=None,
         prop_install_mode=PropInstallMode.V8_CONTEXT_SNAPSHOT,
         trampoline_var_name=None,
-        attribute_entries=filter(selector, attribute_entries),
-        constant_entries=filter(selector, constant_entries),
-        exposed_construct_entries=filter(selector, exposed_construct_entries),
-        operation_entries=filter(selector, operation_entries))
+        attribute_entries=list(filter(selector, attribute_entries)),
+        constant_entries=list(filter(selector, constant_entries)),
+        exposed_construct_entries=list(
+            filter(selector, exposed_construct_entries)),
+        operation_entries=list(filter(selector, operation_entries)))
 
     return func_decl, func_def
 
@@ -6810,11 +6815,11 @@ def generate_interface(interface_identifier):
          class_name=impl_class_name,
          prop_install_mode=PropInstallMode.UNCONDITIONAL,
          trampoline_var_name=tp_install_unconditional_props,
-         attribute_entries=filter(is_unconditional, attribute_entries),
-         constant_entries=filter(is_unconditional, constant_entries),
-         exposed_construct_entries=filter(is_unconditional,
-                                          exposed_construct_entries),
-         operation_entries=filter(is_unconditional, operation_entries))
+         attribute_entries=list(filter(is_unconditional, attribute_entries)),
+         constant_entries=list(filter(is_unconditional, constant_entries)),
+         exposed_construct_entries=list(
+             filter(is_unconditional, exposed_construct_entries)),
+         operation_entries=list(filter(is_unconditional, operation_entries)))
     (install_context_independent_props_decl,
      install_context_independent_props_def,
      install_context_independent_props_trampoline) = make_install_properties(
@@ -6823,11 +6828,14 @@ def generate_interface(interface_identifier):
          class_name=impl_class_name,
          prop_install_mode=PropInstallMode.CONTEXT_INDEPENDENT,
          trampoline_var_name=tp_install_context_independent_props,
-         attribute_entries=filter(is_context_independent, attribute_entries),
-         constant_entries=filter(is_context_independent, constant_entries),
-         exposed_construct_entries=filter(is_context_independent,
-                                          exposed_construct_entries),
-         operation_entries=filter(is_context_independent, operation_entries))
+         attribute_entries=list(
+             filter(is_context_independent, attribute_entries)),
+         constant_entries=list(filter(is_context_independent,
+                                      constant_entries)),
+         exposed_construct_entries=list(
+             filter(is_context_independent, exposed_construct_entries)),
+         operation_entries=list(
+             filter(is_context_independent, operation_entries)))
     (install_context_dependent_props_decl, install_context_dependent_props_def,
      install_context_dependent_props_trampoline) = make_install_properties(
          cg_context,
@@ -6835,11 +6843,13 @@ def generate_interface(interface_identifier):
          class_name=impl_class_name,
          prop_install_mode=PropInstallMode.CONTEXT_DEPENDENT,
          trampoline_var_name=tp_install_context_dependent_props,
-         attribute_entries=filter(is_context_dependent, attribute_entries),
-         constant_entries=filter(is_context_dependent, constant_entries),
-         exposed_construct_entries=filter(is_context_dependent,
-                                          exposed_construct_entries),
-         operation_entries=filter(is_context_dependent, operation_entries))
+         attribute_entries=list(filter(is_context_dependent,
+                                       attribute_entries)),
+         constant_entries=list(filter(is_context_dependent, constant_entries)),
+         exposed_construct_entries=list(
+             filter(is_context_dependent, exposed_construct_entries)),
+         operation_entries=list(filter(is_context_dependent,
+                                       operation_entries)))
     (install_interface_template_decl, install_interface_template_def,
      install_interface_template_trampoline) = make_install_interface_template(
          cg_context,
diff --git a/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/mako_renderer.py b/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/mako_renderer.py
index b4c70553863..f3a2fcd772d 100644
--- a/src/3rdparty/chromium/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/mako_renderer.py
+++ b/src/3rdparty/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/mako_renderer.py
@@ -105,7 +105,7 @@ class MakoRenderer(object):
             on_error = self._caller_stack_on_error
             if (len(current) <= len(on_error)
                     and all(current[i] == on_error[i]
-                            for i in xrange(len(current)))):
+                            for i in range(len(current)))):
                 pass  # Error happened in a deeper caller.
             else:
                 self._caller_stack_on_error = list(self._caller_stack)
diff --git a/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/style_format.py b/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/style_format.py
index dc3493cc394..017d3d47bb3 100644
--- a/src/3rdparty/chromium/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/style_format.py
+++ b/src/3rdparty/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/style_format.py
@@ -70,8 +70,13 @@ def gn_format(contents, filename=None):
 
 
 def _invoke_format_command(command_line, filename, contents):
-    proc = subprocess.Popen(
-        command_line, stdin=subprocess.PIPE, stdout=subprocess.PIPE)
+    kwargs = {}
+    if sys.version_info.major != 2:
+        kwargs['encoding'] = 'utf-8'
+    proc = subprocess.Popen(command_line,
+                            stdin=subprocess.PIPE,
+                            stdout=subprocess.PIPE,
+                            **kwargs)
     stdout_output, stderr_output = proc.communicate(input=contents)
     exit_code = proc.wait()
 
diff --git a/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/task_queue.py b/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/task_queue.py
index 0d8f4c0f303..e666a9b668e 100644
--- a/src/3rdparty/chromium/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/task_queue.py
+++ b/src/3rdparty/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/task_queue.py
@@ -2,6 +2,7 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import functools
 import multiprocessing
 
 from .package_initializer import package_initializer
@@ -76,7 +77,7 @@ class TaskQueue(object):
         if not report_progress:
             return
 
-        done_count = reduce(
+        done_count = functools.reduce(
             lambda count, worker_task: count + bool(worker_task.ready()),
             self._worker_tasks, 0)
         report_progress(len(self._worker_tasks), done_count)
@@ -85,4 +86,4 @@ class TaskQueue(object):
 def _task_queue_run_tasks(tasks):
     for task in tasks:
         func, args, kwargs = task
-        apply(func, args, kwargs)
+        func(*args, **kwargs)
diff --git a/chromium/third_party/blink/renderer/bindings/scripts/code_generator.py b/chromium/third_party/blink/renderer/bindings/scripts/code_generator.py
index e8280be7213..e49e6eb965e 100644
--- a/src/3rdparty/chromium/chromium/third_party/blink/renderer/bindings/scripts/code_generator.py
+++ b/src/3rdparty/chromium/third_party/blink/renderer/bindings/scripts/code_generator.py
@@ -13,6 +13,7 @@ import re
 import sys
 
 from idl_types import set_ancestors, IdlType
+from itertools import groupby
 from v8_globals import includes
 from v8_interface import constant_filters
 from v8_types import set_component_dirs
@@ -43,6 +44,7 @@ TEMPLATES_DIR = os.path.normpath(
 # after path[0] == invoking script dir
 sys.path.insert(1, THIRD_PARTY_DIR)
 import jinja2
+from jinja2.filters import make_attrgetter, environmentfilter
 
 
 def generate_indented_conditional(code, conditional):
@@ -88,6 +90,13 @@ def runtime_enabled_if(code, name):
     return generate_indented_conditional(code, function)
 
 
+@environmentfilter
+def do_stringify_key_group_by(environment, value, attribute):
+    expr = make_attrgetter(environment, attribute)
+    key = lambda item: '' if expr(item) is None else str(expr(item))
+    return groupby(sorted(value, key=key), expr)
+
+
 def initialize_jinja_env(cache_dir):
     jinja_env = jinja2.Environment(
         loader=jinja2.FileSystemLoader(TEMPLATES_DIR),
@@ -117,6 +126,7 @@ def initialize_jinja_env(cache_dir):
     })
     jinja_env.filters.update(constant_filters())
     jinja_env.filters.update(method_filters())
+    jinja_env.filters["stringifykeygroupby"] = do_stringify_key_group_by
     return jinja_env
 
 
diff --git a/chromium/third_party/blink/renderer/bindings/scripts/generate_origin_trial_features.py b/chromium/third_party/blink/renderer/bindings/scripts/generate_origin_trial_features.py
index 130004eae83..04c0fabcef2 100755
--- a/src/3rdparty/chromium/chromium/third_party/blink/renderer/bindings/scripts/generate_origin_trial_features.py
+++ b/src/3rdparty/chromium/third_party/blink/renderer/bindings/scripts/generate_origin_trial_features.py
@@ -80,7 +80,7 @@ def read_idl_file(reader, idl_filename):
     assert len(interfaces) == 1, (
         "Expected one interface in file %r, found %d" %
         (idl_filename, len(interfaces)))
-    return (interfaces.values()[0], includes)
+    return (list(interfaces.values())[0], includes)
 
 
 def interface_is_global(interface):
@@ -281,7 +281,7 @@ def main():
 
     info_provider = create_component_info_provider(
         os.path.normpath(options.info_dir), options.target_component)
-    idl_filenames = map(str.strip, open(options.idl_files_list))
+    idl_filenames = list(map(str.strip, open(options.idl_files_list)))
 
     generate_origin_trial_features(info_provider, options, idl_filenames)
     return 0
diff --git a/chromium/third_party/blink/renderer/bindings/scripts/idl_definitions.py b/chromium/third_party/blink/renderer/bindings/scripts/idl_definitions.py
index 14e6e9d3f87..b027818aef2 100644
--- a/src/3rdparty/chromium/chromium/third_party/blink/renderer/bindings/scripts/idl_definitions.py
+++ b/src/3rdparty/chromium/third_party/blink/renderer/bindings/scripts/idl_definitions.py
@@ -394,7 +394,8 @@ class IdlInterface(object):
             else:
                 raise ValueError('Unrecognized node class: %s' % child_class)
 
-        if len(filter(None, [self.iterable, self.maplike, self.setlike])) > 1:
+        if len(list(filter(None,
+                           [self.iterable, self.maplike, self.setlike]))) > 1:
             raise ValueError(
                 'Interface can only have one of iterable<>, maplike<> and setlike<>.'
             )
@@ -512,6 +513,9 @@ class IdlAttribute(TypedObject):
     def accept(self, visitor):
         visitor.visit_attribute(self)
 
+    def __lt__(self, other):
+        return self.name < other.name
+
 
 ################################################################################
 # Constants
@@ -852,7 +856,7 @@ class IdlIncludes(object):
 ################################################################################
 
 
-class Exposure:
+class Exposure(object):
     """An Exposure holds one Exposed or RuntimeEnabled condition.
     Each exposure has two properties: exposed and runtime_enabled.
     Exposure(e, r) corresponds to [Exposed(e r)]. Exposure(e) corresponds to
diff --git a/chromium/third_party/blink/renderer/bindings/scripts/idl_reader.py b/chromium/third_party/blink/renderer/bindings/scripts/idl_reader.py
index 8d72865a6ca..b80eebdcd61 100644
--- a/src/3rdparty/chromium/chromium/third_party/blink/renderer/bindings/scripts/idl_reader.py
+++ b/src/3rdparty/chromium/third_party/blink/renderer/bindings/scripts/idl_reader.py
@@ -55,8 +55,8 @@ def validate_blink_idl_definitions(idl_filename, idl_file_basename,
          definitions. There is no filename convention in this case.
        - Otherwise, an IDL file is invalid.
     """
-    targets = (
-        definitions.interfaces.values() + definitions.dictionaries.values())
+    targets = (list(definitions.interfaces.values()) +
+               list(definitions.dictionaries.values()))
     number_of_targets = len(targets)
     if number_of_targets > 1:
         raise Exception(
diff --git a/chromium/third_party/blink/renderer/bindings/scripts/idl_types.py b/chromium/third_party/blink/renderer/bindings/scripts/idl_types.py
index cd4f0c3513b..ab95e9c0b08 100644
--- a/src/3rdparty/chromium/chromium/third_party/blink/renderer/bindings/scripts/idl_types.py
+++ b/src/3rdparty/chromium/third_party/blink/renderer/bindings/scripts/idl_types.py
@@ -349,7 +349,7 @@ class IdlUnionType(IdlTypeBase):
         return True
 
     def single_matching_member_type(self, predicate):
-        matching_types = filter(predicate, self.flattened_member_types)
+        matching_types = list(filter(predicate, self.flattened_member_types))
         if len(matching_types) > 1:
             raise ValueError('%s is ambiguous.' % self.name)
         return matching_types[0] if matching_types else None
diff --git a/chromium/third_party/blink/renderer/bindings/scripts/utilities.py b/chromium/third_party/blink/renderer/bindings/scripts/utilities.py
index e1677ee7bd6..3c5006f064f 100644
--- a/src/3rdparty/chromium/chromium/third_party/blink/renderer/bindings/scripts/utilities.py
+++ b/src/3rdparty/chromium/third_party/blink/renderer/bindings/scripts/utilities.py
@@ -196,8 +196,9 @@ class ComponentInfoProviderModules(ComponentInfoProvider):
 
     @property
     def callback_functions(self):
-        return dict(self._component_info_core['callback_functions'].items() +
-                    self._component_info_modules['callback_functions'].items())
+        return dict(
+            list(self._component_info_core['callback_functions'].items()) +
+            list(self._component_info_modules['callback_functions'].items()))
 
     @property
     def specifier_for_export(self):
@@ -209,8 +210,8 @@ class ComponentInfoProviderModules(ComponentInfoProvider):
 
 
 def load_interfaces_info_overall_pickle(info_dir):
-    with open(os.path.join(info_dir,
-                           'interfaces_info.pickle')) as interface_info_file:
+    with open(os.path.join(info_dir, 'interfaces_info.pickle'),
+              mode='rb') as interface_info_file:
         return pickle.load(interface_info_file)
 
 
@@ -236,23 +237,20 @@ def merge_dict_recursively(target, diff):
 
 def create_component_info_provider_core(info_dir):
     interfaces_info = load_interfaces_info_overall_pickle(info_dir)
-    with open(
-            os.path.join(info_dir, 'core',
-                         'component_info_core.pickle')) as component_info_file:
+    with open(os.path.join(info_dir, 'core', 'component_info_core.pickle'),
+              mode='rb') as component_info_file:
         component_info = pickle.load(component_info_file)
     return ComponentInfoProviderCore(interfaces_info, component_info)
 
 
 def create_component_info_provider_modules(info_dir):
     interfaces_info = load_interfaces_info_overall_pickle(info_dir)
-    with open(
-            os.path.join(info_dir, 'core',
-                         'component_info_core.pickle')) as component_info_file:
+    with open(os.path.join(info_dir, 'core', 'component_info_core.pickle'),
+              mode='rb') as component_info_file:
         component_info_core = pickle.load(component_info_file)
-    with open(
-            os.path.join(
-                info_dir, 'modules',
-                'component_info_modules.pickle')) as component_info_file:
+    with open(os.path.join(info_dir, 'modules',
+                           'component_info_modules.pickle'),
+              mode='rb') as component_info_file:
         component_info_modules = pickle.load(component_info_file)
     return ComponentInfoProviderModules(interfaces_info, component_info_core,
                                         component_info_modules)
@@ -356,7 +354,7 @@ def write_pickle_file(pickle_filename, data):
     pickle_filename = abs(pickle_filename)
     # If |data| is same with the file content, we skip updating.
     if os.path.isfile(pickle_filename):
-        with open(pickle_filename) as pickle_file:
+        with open(pickle_filename, 'rb') as pickle_file:
             try:
                 if pickle.load(pickle_file) == data:
                     return
diff --git a/chromium/third_party/blink/renderer/bindings/scripts/v8_interface.py b/chromium/third_party/blink/renderer/bindings/scripts/v8_interface.py
index a43260414db..a85b03abe75 100644
--- a/src/3rdparty/chromium/chromium/third_party/blink/renderer/bindings/scripts/v8_interface.py
+++ b/src/3rdparty/chromium/third_party/blink/renderer/bindings/scripts/v8_interface.py
@@ -189,7 +189,7 @@ def context_enabled_features(attributes):
         return sorted([
             member for member in members
             if member.get(KEY) and not member.get('exposed_test')
-        ])
+        ], key=lambda item: item['name'])
 
     def member_filter_by_name(members, name):
         return [member for member in members if member[KEY] == name]
@@ -612,7 +612,8 @@ def interface_context(interface, interfaces, component_info):
         sorted(
             origin_trial_features(interface, context['constants'],
                                   context['attributes'], context['methods']) +
-            context_enabled_features(context['attributes'])),
+            context_enabled_features(context['attributes']),
+            key=lambda item: item['name']),
     })
     if context['optional_features']:
         includes.add('platform/bindings/v8_per_context_data.h')
@@ -1356,9 +1357,9 @@ def resolution_tests_methods(effective_overloads):
 
     # Extract argument and IDL type to simplify accessing these in each loop.
     arguments = [method['arguments'][index] for method in methods]
-    arguments_methods = zip(arguments, methods)
+    arguments_methods = list(zip(arguments, methods))
     idl_types = [argument['idl_type_object'] for argument in arguments]
-    idl_types_methods = zip(idl_types, methods)
+    idl_types_methods = list(zip(idl_types, methods))
 
     # We can’t do a single loop through all methods or simply sort them, because
     # a method may be listed in multiple steps of the resolution algorithm, and
diff --git a/chromium/third_party/blink/renderer/bindings/scripts/v8_methods.py b/chromium/third_party/blink/renderer/bindings/scripts/v8_methods.py
index 5f1f89a3def..6ee8a407798 100644
--- a/src/3rdparty/chromium/chromium/third_party/blink/renderer/bindings/scripts/v8_methods.py
+++ b/src/3rdparty/chromium/third_party/blink/renderer/bindings/scripts/v8_methods.py
@@ -46,6 +46,10 @@ import v8_types
 import v8_utilities
 from v8_utilities import (has_extended_attribute_value, is_unforgeable)
 
+# TODO: Remove this once Python2 is obsoleted.
+if sys.version_info.major != 2:
+    basestring = str
+
 
 def method_is_visible(method, interface_is_partial):
     if 'overloads' in method:
diff --git a/chromium/third_party/blink/renderer/bindings/scripts/v8_utilities.py b/chromium/third_party/blink/renderer/bindings/scripts/v8_utilities.py
index 2ecd6923320..fcfc48371b1 100644
--- a/src/3rdparty/chromium/chromium/third_party/blink/renderer/bindings/scripts/v8_utilities.py
+++ b/src/3rdparty/chromium/third_party/blink/renderer/bindings/scripts/v8_utilities.py
@@ -271,7 +271,7 @@ EXPOSED_WORKERS = set([
 ])
 
 
-class ExposureSet:
+class ExposureSet(object):
     """An ExposureSet is a collection of Exposure instructions."""
 
     def __init__(self, exposures=None):
diff --git a/chromium/third_party/blink/renderer/bindings/scripts/web_idl/callback_interface.py b/chromium/third_party/blink/renderer/bindings/scripts/web_idl/callback_interface.py
index 13fb7c7068d..b73b7710687 100644
--- a/src/3rdparty/chromium/chromium/third_party/blink/renderer/bindings/scripts/web_idl/callback_interface.py
+++ b/src/3rdparty/chromium/third_party/blink/renderer/bindings/scripts/web_idl/callback_interface.py
@@ -91,11 +91,13 @@ class CallbackInterface(UserDefinedType, WithExtendedAttributes,
             for operation_ir in ir.operations
         ])
         self._operation_groups = tuple([
-            OperationGroup(
-                operation_group_ir,
-                filter(lambda x: x.identifier == operation_group_ir.identifier,
-                       self._operations),
-                owner=self) for operation_group_ir in ir.operation_groups
+            OperationGroup(operation_group_ir,
+                           list(
+                               filter(
+                                   lambda x: x.identifier == operation_group_ir
+                                   .identifier, self._operations)),
+                           owner=self)
+            for operation_group_ir in ir.operation_groups
         ])
 
     @property
diff --git a/chromium/third_party/blink/renderer/bindings/scripts/web_idl/database.py b/chromium/third_party/blink/renderer/bindings/scripts/web_idl/database.py
index c92cf48eb2a..f5d59129449 100644
--- a/src/3rdparty/chromium/chromium/third_party/blink/renderer/bindings/scripts/web_idl/database.py
+++ b/src/3rdparty/chromium/third_party/blink/renderer/bindings/scripts/web_idl/database.py
@@ -156,4 +156,4 @@ class Database(object):
         return self._view_by_kind(Database._Kind.UNION)
 
     def _view_by_kind(self, kind):
-        return self._impl.find_by_kind(kind).values()
+        return list(self._impl.find_by_kind(kind).values())
diff --git a/chromium/third_party/blink/renderer/bindings/scripts/web_idl/exposure.py b/chromium/third_party/blink/renderer/bindings/scripts/web_idl/exposure.py
index abaeef39c30..e36cf7439ae 100644
--- a/src/3rdparty/chromium/chromium/third_party/blink/renderer/bindings/scripts/web_idl/exposure.py
+++ b/src/3rdparty/chromium/third_party/blink/renderer/bindings/scripts/web_idl/exposure.py
@@ -8,8 +8,11 @@ from .runtime_enabled_features import RuntimeEnabledFeatures
 class _Feature(str):
     """Represents a runtime-enabled feature."""
 
+    def __new__(cls, value):
+        return str.__new__(cls, value)
+
     def __init__(self, value):
-        str.__init__(self, value)
+        str.__init__(self)
         self._is_context_dependent = (
             RuntimeEnabledFeatures.is_context_dependent(self))
 
diff --git a/chromium/third_party/blink/renderer/bindings/scripts/web_idl/function_like.py b/chromium/third_party/blink/renderer/bindings/scripts/web_idl/function_like.py
index 648c70d803d..1712f19c672 100644
--- a/src/3rdparty/chromium/chromium/third_party/blink/renderer/bindings/scripts/web_idl/function_like.py
+++ b/src/3rdparty/chromium/third_party/blink/renderer/bindings/scripts/web_idl/function_like.py
@@ -71,8 +71,9 @@ class FunctionLike(WithIdentifier):
     def num_of_required_arguments(self):
         """Returns the number of required arguments."""
         return len(
-            filter(lambda arg: not (arg.is_optional or arg.is_variadic),
-                   self.arguments))
+            list(
+                filter(lambda arg: not (arg.is_optional or arg.is_variadic),
+                       self.arguments)))
 
 
 class OverloadGroup(WithIdentifier):
@@ -171,8 +172,7 @@ class OverloadGroup(WithIdentifier):
         Returns the effective overload set.
         https://heycam.github.io/webidl/#compute-the-effective-overload-set
         """
-        assert argument_count is None or isinstance(argument_count,
-                                                    (int, long))
+        assert argument_count is None or isinstance(argument_count, int)
 
         N = argument_count
         S = []
@@ -188,21 +188,21 @@ class OverloadGroup(WithIdentifier):
 
             S.append(
                 OverloadGroup.EffectiveOverloadItem(
-                    X, map(lambda arg: arg.idl_type, X.arguments),
-                    map(lambda arg: arg.optionality, X.arguments)))
+                    X, list(map(lambda arg: arg.idl_type, X.arguments)),
+                    list(map(lambda arg: arg.optionality, X.arguments))))
 
             if X.is_variadic:
-                for i in xrange(n, max(maxarg, N)):
-                    t = map(lambda arg: arg.idl_type, X.arguments)
-                    o = map(lambda arg: arg.optionality, X.arguments)
-                    for _ in xrange(n, i + 1):
+                for i in range(n, max(maxarg, N)):
+                    t = list(map(lambda arg: arg.idl_type, X.arguments))
+                    o = list(map(lambda arg: arg.optionality, X.arguments))
+                    for _ in range(n, i + 1):
                         t.append(X.arguments[-1].idl_type)
                         o.append(X.arguments[-1].optionality)
                     S.append(OverloadGroup.EffectiveOverloadItem(X, t, o))
 
-            t = map(lambda arg: arg.idl_type, X.arguments)
-            o = map(lambda arg: arg.optionality, X.arguments)
-            for i in xrange(n - 1, -1, -1):
+            t = list(map(lambda arg: arg.idl_type, X.arguments))
+            o = list(map(lambda arg: arg.optionality, X.arguments))
+            for i in range(n - 1, -1, -1):
                 if X.arguments[i].optionality == IdlType.Optionality.REQUIRED:
                     break
                 S.append(OverloadGroup.EffectiveOverloadItem(X, t[:i], o[:i]))
@@ -222,7 +222,7 @@ class OverloadGroup(WithIdentifier):
             for item in items)
         assert len(items) > 1
 
-        for index in xrange(len(items[0].type_list)):
+        for index in range(len(items[0].type_list)):
             # Assume that the given items are valid, and we only need to test
             # the two types.
             if OverloadGroup.are_distinguishable_types(
diff --git a/chromium/third_party/blink/renderer/bindings/scripts/web_idl/idl_compiler.py b/chromium/third_party/blink/renderer/bindings/scripts/web_idl/idl_compiler.py
index c5ee2bd8a3d..58315072480 100644
--- a/src/3rdparty/chromium/chromium/third_party/blink/renderer/bindings/scripts/web_idl/idl_compiler.py
+++ b/src/3rdparty/chromium/third_party/blink/renderer/bindings/scripts/web_idl/idl_compiler.py
@@ -149,8 +149,8 @@ class IdlCompiler(object):
         for old_ir in old_irs:
             new_ir = make_copy(old_ir)
             self._ir_map.add(new_ir)
-            new_ir.attributes = filter(not_disabled, new_ir.attributes)
-            new_ir.operations = filter(not_disabled, new_ir.operations)
+            new_ir.attributes = list(filter(not_disabled, new_ir.attributes))
+            new_ir.operations = list(filter(not_disabled, new_ir.operations))
 
     def _record_defined_in_partial_and_mixin(self):
         old_irs = self._ir_map.irs_of_kinds(
@@ -231,7 +231,7 @@ class IdlCompiler(object):
                       only_to_members_of_partial_or_mixin=False)
             propagate_to_exposure(propagate)
 
-            map(process_member_like, ir.iter_all_members())
+            list(map(process_member_like, ir.iter_all_members()))
 
         def process_member_like(ir):
             propagate = functools.partial(propagate_extattr, ir=ir)
@@ -257,7 +257,7 @@ class IdlCompiler(object):
 
         self._ir_map.move_to_new_phase()
 
-        map(process_interface_like, old_irs)
+        list(map(process_interface_like, old_irs))
 
     def _determine_blink_headers(self):
         irs = self._ir_map.irs_of_kinds(
@@ -422,9 +422,9 @@ class IdlCompiler(object):
             assert not new_interface.deriveds
             derived_set = identifier_to_derived_set.get(
                 new_interface.identifier, set())
-            new_interface.deriveds = map(
-                lambda id_: self._ref_to_idl_def_factory.create(id_),
-                sorted(derived_set))
+            new_interface.deriveds = list(
+                map(lambda id_: self._ref_to_idl_def_factory.create(id_),
+                    sorted(derived_set)))
 
     def _supplement_missing_html_constructor_operation(self):
         # Temporary mitigation of misuse of [HTMLConstructor]
@@ -553,7 +553,8 @@ class IdlCompiler(object):
             self._ir_map.add(new_ir)
 
             for group in new_ir.iter_all_overload_groups():
-                exposures = map(lambda overload: overload.exposure, group)
+                exposures = list(map(lambda overload: overload.exposure,
+                                     group))
 
                 # [Exposed]
                 if any(not exposure.global_names_and_features
@@ -653,8 +654,8 @@ class IdlCompiler(object):
             constructs = set()
             for global_name in global_names:
                 constructs.update(exposed_map.get(global_name, []))
-            new_ir.exposed_constructs = map(
-                self._ref_to_idl_def_factory.create, sorted(constructs))
+            new_ir.exposed_constructs = list(
+                map(self._ref_to_idl_def_factory.create, sorted(constructs)))
 
             assert not new_ir.legacy_window_aliases
             if new_ir.identifier != 'Window':
diff --git a/chromium/third_party/blink/renderer/bindings/scripts/web_idl/interface.py b/chromium/third_party/blink/renderer/bindings/scripts/web_idl/interface.py
index 65d24e529d1..067ef2eb0b2 100644
--- a/src/3rdparty/chromium/chromium/third_party/blink/renderer/bindings/scripts/web_idl/interface.py
+++ b/src/3rdparty/chromium/third_party/blink/renderer/bindings/scripts/web_idl/interface.py
@@ -180,8 +180,9 @@ class Interface(UserDefinedType, WithExtendedAttributes, WithCodeGeneratorInfo,
         self._constructor_groups = tuple([
             ConstructorGroup(
                 group_ir,
-                filter(lambda x: x.identifier == group_ir.identifier,
-                       self._constructors),
+                list(
+                    filter(lambda x: x.identifier == group_ir.identifier,
+                           self._constructors)),
                 owner=self) for group_ir in ir.constructor_groups
         ])
         assert len(self._constructor_groups) <= 1
@@ -192,8 +193,9 @@ class Interface(UserDefinedType, WithExtendedAttributes, WithCodeGeneratorInfo,
         self._named_constructor_groups = tuple([
             ConstructorGroup(
                 group_ir,
-                filter(lambda x: x.identifier == group_ir.identifier,
-                       self._named_constructors),
+                list(
+                    filter(lambda x: x.identifier == group_ir.identifier,
+                           self._named_constructors)),
                 owner=self) for group_ir in ir.named_constructor_groups
         ])
         self._operations = tuple([
@@ -203,22 +205,23 @@ class Interface(UserDefinedType, WithExtendedAttributes, WithCodeGeneratorInfo,
         self._operation_groups = tuple([
             OperationGroup(
                 group_ir,
-                filter(lambda x: x.identifier == group_ir.identifier,
-                       self._operations),
+                list(
+                    filter(lambda x: x.identifier == group_ir.identifier,
+                           self._operations)),
                 owner=self) for group_ir in ir.operation_groups
         ])
         self._exposed_constructs = tuple(ir.exposed_constructs)
         self._legacy_window_aliases = tuple(ir.legacy_window_aliases)
         self._indexed_and_named_properties = None
-        indexed_and_named_property_operations = filter(
-            lambda x: x.is_indexed_or_named_property_operation,
-            self._operations)
+        indexed_and_named_property_operations = list(
+            filter(lambda x: x.is_indexed_or_named_property_operation,
+                   self._operations))
         if indexed_and_named_property_operations:
             self._indexed_and_named_properties = IndexedAndNamedProperties(
                 indexed_and_named_property_operations, owner=self)
         self._stringifier = None
-        stringifier_operation_irs = filter(lambda x: x.is_stringifier,
-                                           ir.operations)
+        stringifier_operation_irs = list(
+            filter(lambda x: x.is_stringifier, ir.operations))
         if stringifier_operation_irs:
             assert len(stringifier_operation_irs) == 1
             op_ir = make_copy(stringifier_operation_irs[0])
@@ -231,8 +234,9 @@ class Interface(UserDefinedType, WithExtendedAttributes, WithCodeGeneratorInfo,
             attribute = None
             if operation.stringifier_attribute:
                 attr_id = operation.stringifier_attribute
-                attributes = filter(lambda x: x.identifier == attr_id,
-                                    self._attributes)
+                attributes = list(
+                    filter(lambda x: x.identifier == attr_id,
+                           self._attributes))
                 assert len(attributes) == 1
                 attribute = attributes[0]
             self._stringifier = Stringifier(operation, attribute, owner=self)
@@ -578,8 +582,9 @@ class Iterable(WithDebugInfo):
         self._operation_groups = tuple([
             OperationGroup(
                 group_ir,
-                filter(lambda x: x.identifier == group_ir.identifier,
-                       self._operations),
+                list(
+                    filter(lambda x: x.identifier == group_ir.identifier,
+                           self._operations)),
                 owner=owner) for group_ir in ir.operation_groups
         ])
 
@@ -666,8 +671,9 @@ class Maplike(WithDebugInfo):
         self._operation_groups = tuple([
             OperationGroup(
                 group_ir,
-                filter(lambda x: x.identifier == group_ir.identifier,
-                       self._operations),
+                list(
+                    filter(lambda x: x.identifier == group_ir.identifier,
+                           self._operations)),
                 owner=owner) for group_ir in ir.operation_groups
         ])
 
@@ -755,8 +761,9 @@ class Setlike(WithDebugInfo):
         self._operation_groups = tuple([
             OperationGroup(
                 group_ir,
-                filter(lambda x: x.identifier == group_ir.identifier,
-                       self._operations),
+                list(
+                    filter(lambda x: x.identifier == group_ir.identifier,
+                           self._operations)),
                 owner=owner) for group_ir in ir.operation_groups
         ])
 
diff --git a/chromium/third_party/blink/renderer/bindings/scripts/web_idl/ir_builder.py b/chromium/third_party/blink/renderer/bindings/scripts/web_idl/ir_builder.py
index e9aeff4ab82..d80554d603e 100644
--- a/src/3rdparty/chromium/chromium/third_party/blink/renderer/bindings/scripts/web_idl/ir_builder.py
+++ b/src/3rdparty/chromium/third_party/blink/renderer/bindings/scripts/web_idl/ir_builder.py
@@ -2,6 +2,8 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import sys
+
 from .argument import Argument
 from .ast_group import AstGroup
 from .attribute import Attribute
@@ -30,6 +32,11 @@ from .operation import Operation
 from .typedef import Typedef
 
 
+# TODO: Remove this once Python2 is obsoleted.
+if sys.version_info.major != 2:
+    long = int
+
+
 def load_and_register_idl_definitions(filepaths, register_ir,
                                       create_ref_to_idl_def, idl_type_factory):
     """
@@ -160,7 +167,7 @@ class _IRBuilder(object):
         child_nodes = list(node.GetChildren())
         extended_attributes = self._take_extended_attributes(child_nodes)
 
-        members = map(self._build_interface_member, child_nodes)
+        members = list(map(self._build_interface_member, child_nodes))
         attributes = []
         constants = []
         operations = []
@@ -302,7 +309,7 @@ class _IRBuilder(object):
         child_nodes = list(node.GetChildren())
         inherited = self._take_inheritance(child_nodes)
         extended_attributes = self._take_extended_attributes(child_nodes)
-        own_members = map(self._build_dictionary_member, child_nodes)
+        own_members = list(map(self._build_dictionary_member, child_nodes))
 
         return Dictionary.IR(
             identifier=Identifier(node.GetName()),
@@ -336,7 +343,7 @@ class _IRBuilder(object):
 
         child_nodes = list(node.GetChildren())
         extended_attributes = self._take_extended_attributes(child_nodes)
-        members = map(self._build_interface_member, child_nodes)
+        members = list(map(self._build_interface_member, child_nodes))
         constants = []
         operations = []
         for member in members:
@@ -456,8 +463,8 @@ class _IRBuilder(object):
                 assert len(child_nodes) == 1
                 child = child_nodes[0]
                 if child.GetClass() == 'Arguments':
-                    arguments = map(build_extattr_argument,
-                                    child.GetChildren())
+                    arguments = list(
+                        map(build_extattr_argument, child.GetChildren()))
                 elif child.GetClass() == 'Call':
                     assert len(child.GetChildren()) == 1
                     grand_child = child.GetChildren()[0]
@@ -486,7 +493,9 @@ class _IRBuilder(object):
 
         assert node.GetClass() == 'ExtAttributes'
         return ExtendedAttributes(
-            filter(None, map(build_extended_attribute, node.GetChildren())))
+            list(
+                filter(None, map(build_extended_attribute,
+                                 node.GetChildren()))))
 
     def _build_inheritance(self, node):
         assert node.GetClass() == 'Inherit'
@@ -506,7 +515,7 @@ class _IRBuilder(object):
 
     def _build_iterable(self, node):
         assert node.GetClass() == 'Iterable'
-        types = map(self._build_type, node.GetChildren())
+        types = list(map(self._build_type, node.GetChildren()))
         assert len(types) == 1 or len(types) == 2
         if len(types) == 1:  # value iterator
             key_type, value_type = (None, types[0])
@@ -584,7 +593,7 @@ class _IRBuilder(object):
     def _build_maplike(self, node, interface_identifier):
         assert node.GetClass() == 'Maplike'
         assert isinstance(interface_identifier, Identifier)
-        types = map(self._build_type, node.GetChildren())
+        types = list(map(self._build_type, node.GetChildren()))
         assert len(types) == 2
         key_type, value_type = types
         is_readonly = bool(node.GetProperty('READONLY'))
@@ -676,7 +685,7 @@ class _IRBuilder(object):
     def _build_setlike(self, node, interface_identifier):
         assert node.GetClass() == 'Setlike'
         assert isinstance(interface_identifier, Identifier)
-        types = map(self._build_type, node.GetChildren())
+        types = list(map(self._build_type, node.GetChildren()))
         assert len(types) == 1
         value_type = types[0]
         is_readonly = bool(node.GetProperty('READONLY'))
@@ -838,7 +847,7 @@ class _IRBuilder(object):
 
         def build_union_type(node, extended_attributes):
             return self._idl_type_factory.union_type(
-                member_types=map(self._build_type, node.GetChildren()),
+                member_types=list(map(self._build_type, node.GetChildren())),
                 is_optional=is_optional,
                 extended_attributes=extended_attributes,
                 debug_info=self._build_debug_info(node))
diff --git a/chromium/third_party/blink/renderer/bindings/scripts/web_idl/make_copy.py b/chromium/third_party/blink/renderer/bindings/scripts/web_idl/make_copy.py
index a7a2b11f3f0..2f6b61300ff 100644
--- a/src/3rdparty/chromium/chromium/third_party/blink/renderer/bindings/scripts/web_idl/make_copy.py
+++ b/src/3rdparty/chromium/third_party/blink/renderer/bindings/scripts/web_idl/make_copy.py
@@ -3,6 +3,13 @@
 # found in the LICENSE file.
 
 
+import sys
+
+# TODO: Remove this once Python2 is obsoleted.
+if sys.version_info.major != 2:
+    long = int
+    basestring = str
+
 def make_copy(obj, memo=None):
     """
     Creates a copy of the given object, which should be an IR or part of IR.
diff --git a/chromium/third_party/blink/renderer/bindings/scripts/web_idl/namespace.py b/chromium/third_party/blink/renderer/bindings/scripts/web_idl/namespace.py
index eeabef97cbe..bd7e98907f3 100644
--- a/src/3rdparty/chromium/chromium/third_party/blink/renderer/bindings/scripts/web_idl/namespace.py
+++ b/src/3rdparty/chromium/third_party/blink/renderer/bindings/scripts/web_idl/namespace.py
@@ -107,11 +107,13 @@ class Namespace(UserDefinedType, WithExtendedAttributes, WithCodeGeneratorInfo,
             for operation_ir in ir.operations
         ])
         self._operation_groups = tuple([
-            OperationGroup(
-                operation_group_ir,
-                filter(lambda x: x.identifier == operation_group_ir.identifier,
-                       self._operations),
-                owner=self) for operation_group_ir in ir.operation_groups
+            OperationGroup(operation_group_ir,
+                           list(
+                               filter(
+                                   lambda x: x.identifier == operation_group_ir
+                                   .identifier, self._operations)),
+                           owner=self)
+            for operation_group_ir in ir.operation_groups
         ])
 
     @property
diff --git a/chromium/third_party/blink/renderer/bindings/templates/dictionary_v8.cc.tmpl b/chromium/third_party/blink/renderer/bindings/templates/dictionary_v8.cc.tmpl
index 0add9c45a38..dc910f6d227 100644
--- a/src/3rdparty/chromium/chromium/third_party/blink/renderer/bindings/templates/dictionary_v8.cc.tmpl
+++ b/src/3rdparty/chromium/third_party/blink/renderer/bindings/templates/dictionary_v8.cc.tmpl
@@ -59,9 +59,9 @@ void {{v8_class}}::ToImpl(v8::Isolate* isolate, v8::Local<v8::Value> v8_value, {
   DCHECK(executionContext);
   {% endif %}{# has_origin_trial_members #}
   {% endif %}{# members #}
-  {% for origin_trial_test, origin_trial_member_list in members | groupby('origin_trial_feature_name') %}
+  {% for origin_trial_test, origin_trial_member_list in members | stringifykeygroupby('origin_trial_feature_name') %}
   {% filter origin_trial_enabled(origin_trial_test, "executionContext") %}
-  {% for feature_name, member_list in origin_trial_member_list | groupby('runtime_enabled_feature_name') %}
+  {% for feature_name, member_list in origin_trial_member_list | stringifykeygroupby('runtime_enabled_feature_name') %}
   {% filter runtime_enabled(feature_name) %}
   {% for member in member_list %}
   v8::Local<v8::Value> {{member.v8_value}};
@@ -147,9 +147,9 @@ bool toV8{{cpp_class}}(const {{cpp_class}}* impl, v8::Local<v8::Object> dictiona
   DCHECK(executionContext);
   {% endif %}{# has_origin_trial_members #}
   {% endif %}{# members #}
-  {% for origin_trial_test, origin_trial_member_list in members | groupby('origin_trial_feature_name') %}
+  {% for origin_trial_test, origin_trial_member_list in members | stringifykeygroupby('origin_trial_feature_name') %}
   {% filter origin_trial_enabled(origin_trial_test, "executionContext") %}
-  {% for feature_name, member_list in origin_trial_member_list | groupby('runtime_enabled_feature_name') %}
+  {% for feature_name, member_list in origin_trial_member_list | stringifykeygroupby('runtime_enabled_feature_name') %}
   {% filter runtime_enabled(feature_name) %}
   {% for member in member_list %}
   v8::Local<v8::Value> {{member.v8_value}};
diff --git a/chromium/third_party/blink/renderer/build/scripts/core/css/make_style_shorthands.py b/chromium/third_party/blink/renderer/build/scripts/core/css/make_style_shorthands.py
index 1799cd5a153..5f43ffabc26 100755
--- a/src/3rdparty/chromium/chromium/third_party/blink/renderer/build/scripts/core/css/make_style_shorthands.py
+++ b/src/3rdparty/chromium/third_party/blink/renderer/build/scripts/core/css/make_style_shorthands.py
@@ -71,7 +71,7 @@ class Expansion(object):
     def enabled_longhands(self):
         include = lambda longhand: not longhand[
             'runtime_flag'] or self.is_enabled(longhand['runtime_flag'])
-        return filter(include, self._longhands)
+        return list(filter(include, self._longhands))
 
     @property
     def index(self):
@@ -87,8 +87,9 @@ class Expansion(object):
 
 def create_expansions(longhands):
     flags = collect_runtime_flags(longhands)
-    expansions = map(lambda mask: Expansion(longhands, flags, mask),
-                     range(1 << len(flags)))
+    expansions = list(
+        map(lambda mask: Expansion(longhands, flags, mask),
+            range(1 << len(flags))))
     assert len(expansions) > 0
     # We generate 2^N expansions for N flags, so enforce some limit.
     assert len(flags) <= 4, 'Too many runtime flags for a single shorthand'
@@ -114,14 +115,14 @@ class StylePropertyShorthandWriter(json5_generator.Writer):
 
         self._longhand_dictionary = defaultdict(list)
         for property_ in json5_properties.shorthands:
-            property_['longhand_enum_keys'] = map(enum_key_for_css_property,
-                                                  property_['longhands'])
-            property_['longhand_property_ids'] = map(id_for_css_property,
-                                                     property_['longhands'])
-
-            longhands = map(
-                lambda name: json5_properties.properties_by_name[name],
-                property_['longhands'])
+            property_['longhand_enum_keys'] = list(
+                map(enum_key_for_css_property, property_['longhands']))
+            property_['longhand_property_ids'] = list(
+                map(id_for_css_property, property_['longhands']))
+
+            longhands = list(
+                map(lambda name: json5_properties.properties_by_name[name],
+                    property_['longhands']))
             property_['expansions'] = create_expansions(longhands)
             for longhand_enum_key in property_['longhand_enum_keys']:
                 self._longhand_dictionary[longhand_enum_key].append(property_)
diff --git a/chromium/third_party/blink/renderer/build/scripts/core/css/properties/make_css_property_instances.py b/chromium/third_party/blink/renderer/build/scripts/core/css/properties/make_css_property_instances.py
index 75030ac577e..f72aadee17d 100755
--- a/src/3rdparty/chromium/chromium/third_party/blink/renderer/build/scripts/core/css/properties/make_css_property_instances.py
+++ b/src/3rdparty/chromium/third_party/blink/renderer/build/scripts/core/css/properties/make_css_property_instances.py
@@ -42,8 +42,8 @@ class CSSPropertyInstancesWriter(json5_generator.Writer):
         aliases = self._css_properties.aliases
 
         # Lists of PropertyClassData.
-        self._property_classes_by_id = map(self.get_class, properties)
-        self._alias_classes_by_id = map(self.get_class, aliases)
+        self._property_classes_by_id = list(map(self.get_class, properties))
+        self._alias_classes_by_id = list(map(self.get_class, aliases))
 
         # Sort by enum value.
         self._property_classes_by_id.sort(key=lambda t: t.enum_value)
diff --git a/chromium/third_party/blink/renderer/build/scripts/gperf.py b/chromium/third_party/blink/renderer/build/scripts/gperf.py
index 5ee49056be4..db72660d471 100644
--- a/src/3rdparty/chromium/chromium/third_party/blink/renderer/build/scripts/gperf.py
+++ b/src/3rdparty/chromium/third_party/blink/renderer/build/scripts/gperf.py
@@ -95,7 +95,7 @@ def main():
 
     open(args.output_file, 'wb').write(
         generate_gperf(gperf_path,
-                       open(infile).read(), gperf_args))
+                       open(infile).read(), gperf_args).encode('utf-8'))
 
 
 if __name__ == '__main__':
diff --git a/chromium/third_party/blink/renderer/build/scripts/in_file.py b/chromium/third_party/blink/renderer/build/scripts/in_file.py
index 28adc050f1e..58113483e57 100644
--- a/src/3rdparty/chromium/chromium/third_party/blink/renderer/build/scripts/in_file.py
+++ b/src/3rdparty/chromium/third_party/blink/renderer/build/scripts/in_file.py
@@ -66,7 +66,7 @@ class InFile(object):
         self._defaults = defaults
         self._valid_values = copy.deepcopy(
             valid_values if valid_values else {})
-        self._parse(map(str.strip, lines))
+        self._parse(list(map(str.strip, lines)))
 
     @classmethod
     def load_from_files(self, file_paths, defaults, valid_values,
diff --git a/chromium/third_party/blink/renderer/build/scripts/in_generator.py b/chromium/third_party/blink/renderer/build/scripts/in_generator.py
index e46740a2e85..ab1981ad1e3 100644
--- a/src/3rdparty/chromium/chromium/third_party/blink/renderer/build/scripts/in_generator.py
+++ b/src/3rdparty/chromium/third_party/blink/renderer/build/scripts/in_generator.py
@@ -32,10 +32,15 @@ import os
 import os.path
 import shlex
 import shutil
+import sys
 import optparse
 
 from in_file import InFile
 
+# TODO: Remove this once Python2 is obsoleted.
+if sys.version_info.major != 2:
+    basestring = str
+
 
 #########################################################
 # This is now deprecated - use json5_generator.py instead
diff --git a/chromium/third_party/blink/renderer/build/scripts/make_runtime_features.py b/chromium/third_party/blink/renderer/build/scripts/make_runtime_features.py
index cafe8d94a8e..6925a4fa580 100755
--- a/src/3rdparty/chromium/chromium/third_party/blink/renderer/build/scripts/make_runtime_features.py
+++ b/src/3rdparty/chromium/third_party/blink/renderer/build/scripts/make_runtime_features.py
@@ -138,7 +138,7 @@ class RuntimeFeatureWriter(BaseRuntimeFeatureWriter):
                 except Exception:
                     # If trouble unpickling, overwrite
                     pass
-        with open(os.path.abspath(file_name), 'w') as pickle_file:
+        with open(os.path.abspath(file_name), 'wb') as pickle_file:
             pickle.dump(features_map, pickle_file)
 
     def _template_inputs(self):
diff --git a/chromium/third_party/blink/renderer/build/scripts/templates/element_factory.cc.tmpl b/chromium/third_party/blink/renderer/build/scripts/templates/element_factory.cc.tmpl
index dc3f44c5b10..3eefcf9f0ee 100644
--- a/src/3rdparty/chromium/chromium/third_party/blink/renderer/build/scripts/templates/element_factory.cc.tmpl
+++ b/src/3rdparty/chromium/third_party/blink/renderer/build/scripts/templates/element_factory.cc.tmpl
@@ -26,7 +26,7 @@ using {{namespace}}FunctionMap = HashMap<AtomicString, {{namespace}}ConstructorF
 
 static {{namespace}}FunctionMap* g_{{namespace|lower}}_constructors = nullptr;
 
-{% for tag in tags|sort if not tag.noConstructor %}
+{% for tag in tags|sort(attribute='name') if not tag.noConstructor %}
 static {{namespace}}Element* {{namespace}}{{tag.name.to_upper_camel_case()}}Constructor(
     Document& document, const CreateElementFlags flags) {
   {% if tag.runtimeEnabled %}
@@ -52,7 +52,7 @@ static void Create{{namespace}}FunctionMap() {
   // Empty array initializer lists are illegal [dcl.init.aggr] and will not
   // compile in MSVC. If tags list is empty, add check to skip this.
   static const Create{{namespace}}FunctionMapData data[] = {
-  {% for tag in tags|sort if not tag.noConstructor %}
+  {% for tag in tags|sort(attribute='name') if not tag.noConstructor %}
     { {{cpp_namespace}}::{{tag|symbol}}Tag, {{namespace}}{{tag.name.to_upper_camel_case()}}Constructor },
   {% endfor %}
   };
diff --git a/chromium/third_party/blink/renderer/build/scripts/templates/element_type_helpers.cc.tmpl b/chromium/third_party/blink/renderer/build/scripts/templates/element_type_helpers.cc.tmpl
index 9bfc489e048..5f86184e879 100644
--- a/src/3rdparty/chromium/chromium/third_party/blink/renderer/build/scripts/templates/element_type_helpers.cc.tmpl
+++ b/src/3rdparty/chromium/third_party/blink/renderer/build/scripts/templates/element_type_helpers.cc.tmpl
@@ -22,7 +22,7 @@ HTMLTypeMap CreateHTMLTypeMap() {
     const char* name;
     HTMLElementType type;
   } kTags[] = {
-    {% for tag in tags|sort %}
+    {% for tag in tags|sort(attribute='name') %}
     { "{{tag.name}}", HTMLElementType::k{{tag.js_interface}} },
     {% endfor %}
   };
@@ -42,7 +42,7 @@ HTMLElementType htmlElementTypeForTag(const AtomicString& tagName, const Documen
   if (it == html_type_map.end())
     return HTMLElementType::kHTMLUnknownElement;
 
-  {% for tag in tags|sort %}
+  {% for tag in tags|sort(attribute='name') %}
   {% if tag.runtimeEnabled %}
   if (tagName == "{{tag.name}}") {
     if (!RuntimeEnabledFeatures::{{tag.runtimeEnabled}}Enabled(document->GetExecutionContext())) {
diff --git a/chromium/third_party/blink/renderer/build/scripts/templates/element_type_helpers.h.tmpl b/chromium/third_party/blink/renderer/build/scripts/templates/element_type_helpers.h.tmpl
index 1b5297d52dc..edecc81d9d4 100644
--- a/src/3rdparty/chromium/chromium/third_party/blink/renderer/build/scripts/templates/element_type_helpers.h.tmpl
+++ b/src/3rdparty/chromium/third_party/blink/renderer/build/scripts/templates/element_type_helpers.h.tmpl
@@ -15,7 +15,7 @@ namespace blink {
 class Document;
 
 // Type checking.
-{% for tag in tags|sort if not tag.multipleTagNames and not tag.noTypeHelpers %}
+{% for tag in tags|sort(attribute='name') if not tag.multipleTagNames and not tag.noTypeHelpers %}
 class {{tag.interface}};
 template <>
 inline bool IsElementOfType<const {{tag.interface}}>(const Node& node) {
diff --git a/chromium/third_party/blink/renderer/build/scripts/templates/macros.tmpl b/chromium/third_party/blink/renderer/build/scripts/templates/macros.tmpl
index 0244433af2e..dcdbb02a56c 100644
--- a/src/3rdparty/chromium/chromium/third_party/blink/renderer/build/scripts/templates/macros.tmpl
+++ b/src/3rdparty/chromium/third_party/blink/renderer/build/scripts/templates/macros.tmpl
@@ -25,7 +25,7 @@
 
 
 {% macro trie_leaf(index, object, return_macro, lowercase_data) %}
-{% set name, value = object.items()[0] %}
+{% set name, value = (object.items()|list)[0] %}
 {% if name|length %}
 if (
     {%- for c in name -%}
@@ -45,7 +45,7 @@ return {{ return_macro(value) }};
 
 
 {% macro trie_switch(trie, index, return_macro, lowercase_data) %}
-{% if trie|length == 1 and trie.values()[0] is string %}
+{% if trie|length == 1 and (trie.values()|list)[0] is string %}
 {{ trie_leaf(index, trie, return_macro, lowercase_data) -}}
 {% else %}
     {% if lowercase_data %}
diff --git a/chromium/third_party/blink/renderer/build/scripts/templates/make_qualified_names.h.tmpl b/chromium/third_party/blink/renderer/build/scripts/templates/make_qualified_names.h.tmpl
index cb05c6c4315..bd5566b03e7 100644
--- a/src/3rdparty/chromium/chromium/third_party/blink/renderer/build/scripts/templates/make_qualified_names.h.tmpl
+++ b/src/3rdparty/chromium/third_party/blink/renderer/build/scripts/templates/make_qualified_names.h.tmpl
@@ -24,12 +24,12 @@ namespace {{cpp_namespace}} {
 {{symbol_export}}extern const WTF::AtomicString& {{namespace_prefix}}NamespaceURI;
 
 // Tags
-{% for tag in tags|sort %}
+{% for tag in tags|sort(attribute='name') %}
 {{symbol_export}}extern const blink::{{namespace}}QualifiedName& {{tag|symbol}}Tag;
 {% endfor %}
 
 // Attributes
-{% for attr in attrs|sort %}
+{% for attr in attrs|sort(attribute='name') %}
 {{symbol_export}}extern const blink::QualifiedName& {{attr|symbol}}Attr;
 {% endfor %}
 
diff --git a/chromium/third_party/dawn/generator/generator_lib.py b/chromium/third_party/dawn/generator/generator_lib.py
index 5e3734d7833..e3d46bd194f 100644
--- a/src/3rdparty/chromium/chromium/third_party/dawn/generator/generator_lib.py
+++ b/src/3rdparty/chromium/third_party/dawn/generator/generator_lib.py
@@ -201,6 +201,10 @@ def _compute_python_dependencies(root_dir=None):
 
     paths = set()
     for path in module_paths:
+        # Builtin/namespaced modules may return None for the file path.
+        if not path:
+            continue
+
         path = os.path.abspath(path)
 
         if not path.startswith(root_dir):
diff --git a/chromium/third_party/devtools-frontend/src/BUILD.gn b/chromium/third_party/devtools-frontend/src/BUILD.gn
index cd488e88b60..ea1dc3d9a79 100644
--- a/src/3rdparty/chromium/chromium/third_party/devtools-frontend/src/BUILD.gn
+++ b/src/3rdparty/chromium/third_party/devtools-frontend/src/BUILD.gn
@@ -2,6 +2,8 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import("//build/config/python.gni")
+
 import("//third_party/blink/public/public_features.gni")
 import("./all_devtools_files.gni")
 import("./all_devtools_modules.gni")
diff --git a/chromium/third_party/devtools-frontend/src/scripts/build/build_inspector_overlay.py b/chromium/third_party/devtools-frontend/src/scripts/build/build_inspector_overlay.py
index d6666e8b74f..0f7a661e632 100644
--- a/src/3rdparty/chromium/chromium/third_party/devtools-frontend/src/scripts/build/build_inspector_overlay.py
+++ b/src/3rdparty/chromium/third_party/devtools-frontend/src/scripts/build/build_inspector_overlay.py
@@ -45,7 +45,8 @@ def rollup(input_path, output_path, filename, max_size, rollup_plugin):
         ['--format', 'iife', '-n', 'InspectorOverlay'] + ['--input', target] +
         ['--plugin', rollup_plugin],
         stdout=subprocess.PIPE,
-        stderr=subprocess.PIPE)
+        stderr=subprocess.PIPE,
+        text=True)
     out, error = rollup_process.communicate()
     if not out:
         raise Exception("rollup failed: " + error)
diff --git a/chromium/third_party/devtools-frontend/src/scripts/build/build_release_applications.py b/chromium/third_party/devtools-frontend/src/scripts/build/build_release_applications.py
index fa8e73d34af..7d0b84b2171 100644
--- a/src/3rdparty/chromium/chromium/third_party/devtools-frontend/src/scripts/build/build_release_applications.py
+++ b/src/3rdparty/chromium/third_party/devtools-frontend/src/scripts/build/build_release_applications.py
@@ -10,7 +10,7 @@ Builds applications in release mode:
 and the application loader into a single script.
 """
 
-from cStringIO import StringIO
+from io import StringIO
 from os import path
 from os.path import join
 import copy
@@ -145,8 +145,7 @@ class ReleaseBuilder(object):
             resource_content = read_file(path.join(self.application_dir, resource_name))
             if not (resource_name.endswith('.html')
                     or resource_name.endswith('md')):
-                resource_content += resource_source_url(resource_name).encode(
-                    'utf-8')
+                resource_content += resource_source_url(resource_name)
             resource_content = resource_content.replace('\\', '\\\\')
             resource_content = resource_content.replace('\n', '\\n')
             resource_content = resource_content.replace('"', '\\"')
@@ -173,7 +172,9 @@ class ReleaseBuilder(object):
     def _concatenate_application_script(self, output):
         output.write('Root.allDescriptors.push(...%s);' % self._release_module_descriptors())
         if self.descriptors.extends:
-            output.write('Root.applicationDescriptor.modules.push(...%s);' % json.dumps(self.descriptors.application.values()))
+            output.write(
+                'Root.applicationDescriptor.modules.push(...%s);' %
+                json.dumps(list(self.descriptors.application.values())))
         else:
             output.write('Root.applicationDescriptor = %s;' % self.descriptors.application_json())
 
diff --git a/chromium/third_party/devtools-frontend/src/scripts/build/generate_devtools_grd.py b/chromium/third_party/devtools-frontend/src/scripts/build/generate_devtools_grd.py
index be510c48d76..c6a59c90298 100644
--- a/src/3rdparty/chromium/chromium/third_party/devtools-frontend/src/scripts/build/generate_devtools_grd.py
+++ b/src/3rdparty/chromium/third_party/devtools-frontend/src/scripts/build/generate_devtools_grd.py
@@ -123,7 +123,7 @@ def main(argv):
 
     try:
         os.makedirs(path.join(output_directory, 'Images'))
-    except OSError, e:
+    except OSError as e:
         if e.errno != errno.EEXIST:
             raise e
 
@@ -147,7 +147,7 @@ def main(argv):
             shutil.copy(path.join(dirname, filename), path.join(output_directory, 'Images'))
             add_file_to_grd(doc, path.join('Images', filename))
 
-    with open(parsed_args.output_filename, 'w') as output_file:
+    with open(parsed_args.output_filename, 'wb') as output_file:
         output_file.write(doc.toxml(encoding='UTF-8'))
 
 
diff --git a/chromium/third_party/devtools-frontend/src/scripts/build/modular_build.py b/chromium/third_party/devtools-frontend/src/scripts/build/modular_build.py
index 0ba695d3810..bb1da2f9f8d 100644
--- a/src/3rdparty/chromium/chromium/third_party/devtools-frontend/src/scripts/build/modular_build.py
+++ b/src/3rdparty/chromium/third_party/devtools-frontend/src/scripts/build/modular_build.py
@@ -7,6 +7,8 @@
 Utilities for the modular DevTools build.
 """
 
+from __future__ import print_function
+
 import collections
 from os import path
 import os
@@ -40,7 +42,7 @@ def load_and_parse_json(filename):
     try:
         return json.loads(read_file(filename))
     except:
-        print 'ERROR: Failed to parse %s' % filename
+        print('ERROR: Failed to parse %s' % filename)
         raise
 
 class Descriptors:
@@ -57,7 +59,7 @@ class Descriptors:
 
     def application_json(self):
         result = dict()
-        result['modules'] = self.application.values()
+        result['modules'] = list(self.application.values())
         return json.dumps(result)
 
     def all_compiled_files(self):
diff --git a/chromium/third_party/jinja2/tests.py b/chromium/third_party/jinja2/tests.py
index 0adc3d4dbcb..b14f85ff148 100644
--- a/src/3rdparty/chromium/chromium/third_party/jinja2/tests.py
+++ b/src/3rdparty/chromium/third_party/jinja2/tests.py
@@ -10,7 +10,7 @@
 """
 import operator
 import re
-from collections import Mapping
+from collections.abc import Mapping
 from jinja2.runtime import Undefined
 from jinja2._compat import text_type, string_types, integer_types
 import decimal
diff --git a/chromium/tools/metrics/ukm/gen_builders.py b/chromium/tools/metrics/ukm/gen_builders.py
index f9f61d90a56..44e46fae8cc 100755
--- a/src/3rdparty/chromium/chromium/tools/metrics/ukm/gen_builders.py
+++ b/src/3rdparty/chromium/tools/metrics/ukm/gen_builders.py
@@ -48,9 +48,10 @@ def ReadFilteredData(path):
     data = ukm_model.UKM_XML_TYPE.Parse(ukm_file.read())
     event_tag = ukm_model._EVENT_TYPE.tag
     metric_tag = ukm_model._METRIC_TYPE.tag
-    data[event_tag] = filter(ukm_model.IsNotObsolete, data[event_tag])
+    data[event_tag] = list(filter(ukm_model.IsNotObsolete, data[event_tag]))
     for event in data[event_tag]:
-      event[metric_tag] = filter(ukm_model.IsNotObsolete, event[metric_tag])
+      event[metric_tag] = list(
+          filter(ukm_model.IsNotObsolete, event[metric_tag]))
     return data
 
 
diff --git a/chromium/ui/ozone/generate_constructor_list.py b/chromium/ui/ozone/generate_constructor_list.py
index 8d800636c97..04fa18e93df 100755
--- a/src/3rdparty/chromium/chromium/ui/ozone/generate_constructor_list.py
+++ b/src/3rdparty/chromium/ui/ozone/generate_constructor_list.py
@@ -45,12 +45,15 @@ Example Output: ./ui/ozone/generate_constructor_list.py \
   }  // namespace ui
 """
 
+try:
+    from StringIO import StringIO  # for Python 2
+except ImportError:
+    from io import StringIO  # for Python 3
 import optparse
 import os
 import collections
 import re
 import sys
-import string
 
 
 def GetTypedefName(typename):
@@ -68,7 +71,7 @@ def GetConstructorName(typename, platform):
   This is just "Create" + typename + platform.
   """
 
-  return 'Create' + typename + string.capitalize(platform)
+  return 'Create' + typename + platform.capitalize()
 
 
 def GenerateConstructorList(out, namespace, export, typenames, platforms,
@@ -163,12 +166,14 @@ def main(argv):
     sys.exit(1)
 
   # Write to standard output or file specified by --output_cc.
-  out_cc = sys.stdout
+  out_cc = getattr(sys.stdout, 'buffer', sys.stdout)
   if options.output_cc:
     out_cc = open(options.output_cc, 'wb')
 
-  GenerateConstructorList(out_cc, options.namespace, options.export,
+  out_cc_str = StringIO()
+  GenerateConstructorList(out_cc_str, options.namespace, options.export,
                           typenames, platforms, includes, usings)
+  out_cc.write(out_cc_str.getvalue().encode('utf-8'))
 
   if options.output_cc:
     out_cc.close()
diff --git a/chromium/ui/ozone/generate_ozone_platform_list.py b/chromium/ui/ozone/generate_ozone_platform_list.py
index d47c398259b..2702b68b9bd 100755
--- a/src/3rdparty/chromium/chromium/ui/ozone/generate_ozone_platform_list.py
+++ b/src/3rdparty/chromium/ui/ozone/generate_ozone_platform_list.py
@@ -49,12 +49,15 @@ Example Output: ./generate_ozone_platform_list.py --default wayland dri wayland
 
 """
 
+try:
+    from StringIO import StringIO  # for Python 2
+except ImportError:
+    from io import StringIO  # for Python 3
 import optparse
 import os
 import collections
 import re
 import sys
-import string
 
 
 def GetConstantName(name):
@@ -63,7 +66,7 @@ def GetConstantName(name):
   We just capitalize the platform name and prepend "CreateOzonePlatform".
   """
 
-  return 'kPlatform' + string.capitalize(name)
+  return 'kPlatform' + name.capitalize()
 
 
 def GeneratePlatformListText(out, platforms):
@@ -149,9 +152,9 @@ def main(argv):
     platforms.insert(0, options.default)
 
   # Write to standard output or file specified by --output_{cc,h}.
-  out_cc = sys.stdout
-  out_h = sys.stdout
-  out_txt = sys.stdout
+  out_cc = getattr(sys.stdout, 'buffer', sys.stdout)
+  out_h = getattr(sys.stdout, 'buffer', sys.stdout)
+  out_txt = getattr(sys.stdout, 'buffer', sys.stdout)
   if options.output_cc:
     out_cc = open(options.output_cc, 'wb')
   if options.output_h:
@@ -159,9 +162,16 @@ def main(argv):
   if options.output_txt:
     out_txt = open(options.output_txt, 'wb')
 
-  GeneratePlatformListText(out_txt, platforms)
-  GeneratePlatformListHeader(out_h, platforms)
-  GeneratePlatformListSource(out_cc, platforms)
+  out_txt_str = StringIO()
+  out_h_str = StringIO()
+  out_cc_str = StringIO()
+
+  GeneratePlatformListText(out_txt_str, platforms)
+  out_txt.write(out_txt_str.getvalue().encode('utf-8'))
+  GeneratePlatformListHeader(out_h_str, platforms)
+  out_h.write(out_h_str.getvalue().encode('utf-8'))
+  GeneratePlatformListSource(out_cc_str, platforms)
+  out_cc.write(out_cc_str.getvalue().encode('utf-8'))
 
   if options.output_cc:
     out_cc.close()
-- 
2.35.1

Tenth, changes to the configury from Arch via gentoo, altered
to invoke python3 for BLFS where python would only be python2.
That appears to be from an earlier version of qtwebengine.

Origin Arch (Antonio Rojas <arojas@archlinux.org>) via gentoo
Purpose - build with python i.e. python3
Modified by self to use python3 for BLFS and adapted for 5.15.10.

diff -Naur a/configure.pri b/configure.pri
--- a/configure.pri	2022-06-13 21:16:56.000000000 +0100
+++ b/configure.pri	2022-06-21 19:05:13.726504528 +0100
@@ -7,20 +7,7 @@
 equals(QMAKE_HOST.os, Windows): EXE_SUFFIX = .exe
 
 defineTest(isPythonVersionSupported) {
-    python = $$system_quote($$system_path($$1))
-    python_version = $$system('$$python -c "import sys; print(sys.version_info[0:3])"')
-    python_version ~= s/[()]//g
-    python_version = $$split(python_version, ',')
-    python_major_version = $$first(python_version)
-    greaterThan(python_major_version, 2) {
-        qtLog("Python version 3 is not supported by Chromium.")
-        return(false)
-    }
-    python_minor_version = $$member(python_version, 1)
-    python_patch_version = $$member(python_version, 2)
-    greaterThan(python_major_version, 1): greaterThan(python_minor_version, 6): greaterThan(python_patch_version, 4): return(true)
-    qtLog("Unsupported python version: $${python_major_version}.$${python_minor_version}.$${python_patch_version}.")
-    return(false)
+    return(true)
 }
 
 defineTest(qtConfTest_detectJumboBuild) {
@@ -52,22 +39,21 @@
     qtConfReportPadded($${1}, $$mergeLimit)
 }
 
-defineTest(qtConfTest_detectPython2) {
-    python = $$qtConfFindInPath("python2$$EXE_SUFFIX")
-    isEmpty(python) {
-        qtLog("'python2$$EXE_SUFFIX' not found in PATH. Checking for 'python$$EXE_SUFFIX'.")
-        python = $$qtConfFindInPath("python$$EXE_SUFFIX")
+defineTest(qtConfTest_detectPython) {
+    python = $$qtConfFindInPath("python3$$EXE_SUFFIX")
+     isEmpty(python) {
+        qtLog("'python3$$EXE_SUFFIX' not found in PATH. Checking for 'python3$$EXE_SUFFIX'.")
     }
     isEmpty(python) {
-        qtLog("'python$$EXE_SUFFIX' not found in PATH. Giving up.")
+        qtLog("'python3$$EXE_SUFFIX' not found in PATH. Giving up.")
         return(false)
     }
     !isPythonVersionSupported($$python) {
-        qtLog("A suitable Python 2 executable could not be located.")
+        qtLog("A suitable Python3 executable could not be located.")
         return(false)
     }
 
-    # Make tests.python2.location available in configure.json.
+    # Make tests.python.location available in configure.json.
     $${1}.location = $$clean_path($$python)
     export($${1}.location)
     $${1}.cache += location
diff -Naur a/src/buildtools/configure.json b/src/buildtools/configure.json
--- a/src/buildtools/configure.json	2022-06-13 21:16:56.000000000 +0100
+++ b/src/buildtools/configure.json	2022-06-21 19:08:18.543038154 +0100
@@ -295,9 +295,9 @@
             "label": "system ninja",
             "type": "detectNinja"
         },
-        "webengine-python2": {
-            "label": "python2",
-            "type": "detectPython2",
+        "webengine-python": {
+            "label": "python3",
+            "type": "detectPython",
             "log": "location"
         },
         "webengine-winversion": {
@@ -374,7 +374,7 @@
                          && features.webengine-gperf
                          && features.webengine-bison
                          && features.webengine-flex
-                         && features.webengine-python2
+                         && features.webengine-python
                          && features.webengine-nodejs
                          && (!config.sanitizer || features.webengine-sanitizer)
                          && (!config.linux || features.pkg-config)
@@ -400,7 +400,7 @@
                          && features.webengine-gperf
                          && features.webengine-bison
                          && features.webengine-flex
-                         && features.webengine-python2
+                         && features.webengine-python
                          && (!config.sanitizer || features.webengine-sanitizer)
                          && (!config.linux || features.pkg-config)
                          && (!config.linux || features.webengine-host-pkg-config)
@@ -423,12 +423,12 @@
             "autoDetect": "features.private_tests",
             "output": [ "privateFeature" ]
         },
-        "webengine-python2": {
-            "label": "python2",
-            "condition": "tests.webengine-python2",
+        "webengine-python": {
+            "label": "python3",
+            "condition": "tests.webengine-python",
             "output": [
                 "privateFeature",
-                { "type": "varAssign", "name": "QMAKE_PYTHON2", "value": "tests.webengine-python2.location" }
+                { "type": "varAssign", "name": "QMAKE_PYTHON2", "value": "tests.webengine-python.location" }
             ]
         },
         "webengine-gperf": {

Eleventh, a first patch from gentoo to remove the need to build catapult
which will not be updated from python2,
https://github.com/catapult-project/catapult/issues/4599

From b0581c62625e57a63e56369f7eb24a141687cc7a Mon Sep 17 00:00:00 2001
From: Jimi Huotari <chiitoo@gentoo.org>
Date: Wed, 6 Apr 2022 14:35:14 +0300
Subject: [PATCH] Remove dependency on catapult

Signed-off-by: Andreas Sturmlechner <asturm@gentoo.org>
---
 chromium/BUILD.gn                             | 11 ----
 chromium/chrome/chrome_paks.gni               |  2 -
 chromium/chrome/test/BUILD.gn                 |  6 ---
 chromium/content/browser/BUILD.gn             |  1 -
 chromium/content/browser/tracing/BUILD.gn     | 51 -------------------
 .../content/browser/tracing/tracing_ui.cc     |  3 --
 chromium/content/shell/BUILD.gn               |  2 -
 chromium/fuchsia/engine/BUILD.gn              |  2 -
 chromium/headless/BUILD.gn                    |  2 -
 chromium/mojo/public/tools/BUILD.gn           |  1 -
 chromium/testing/BUILD.gn                     |  1 -
 chromium/third_party/webrtc/test/BUILD.gn     |  5 --
 chromium/tools/binary_size/BUILD.gn           |  1 -
 chromium/tools/grit/BUILD.gn                  |  1 -
 chromium/tools/gritsettings/resource_ids.spec |  6 ---
 chromium/tools/metrics/BUILD.gn               |  1 -
 .../perf/chrome_telemetry_build/BUILD.gn      |  3 --
 .../perf/core/perfetto_binary_roller/BUILD.gn |  1 -
 chromium/tools/polymer/BUILD.gn               |  1 -
 chromium/v8/tools/BUILD.gn                    |  4 --
 chromium/weblayer/shell/BUILD.gn              |  2 -
 21 files changed, 107 deletions(-)
 delete mode 100644 chromium/content/browser/tracing/BUILD.gn

diff --git a/chromium/BUILD.gn b/chromium/BUILD.gn
index 8d9657d545c..59e9447f456 100644
--- a/src/3rdparty/chromium/BUILD.gn
+++ b/src/3rdparty/chromium/BUILD.gn
@@ -239,7 +239,6 @@ group("gn_all") {
       "//media/capture:capture_unittests",
       "//media/cast:cast_unittests",
       "//third_party/angle/src/tests:angle_white_box_tests",
-      "//third_party/catapult/telemetry:bitmaptools($host_toolchain)",
     ]
   } else if (is_ios && !use_qt) {
     deps += [
@@ -354,7 +353,6 @@ group("gn_all") {
       "//net/android:net_junit_tests",
       "//services:services_junit_tests",
       "//testing/android/junit:junit_unit_tests",
-      "//third_party/catapult/devil",
       "//third_party/smhasher:murmurhash3",
       "//tools/android:android_tools",
       "//tools/android:memconsumer",
@@ -959,7 +957,6 @@ if (is_chromeos) {
       "//third_party/dawn/src/tests:dawn_unittests",
 
       # Blocked on https://github.com/catapult-project/catapult/issues/2297
-      #"//third_party/catapult/telemetry:bitmaptools",
       "//tools/perf/clear_system_cache",
       "//ui/ozone/gl:ozone_gl_unittests",
     ]
@@ -1037,7 +1034,6 @@ if (!is_ios && !use_qt) {
       data_deps = [
         "//chrome:chrome",
         "//chrome/test/chromedriver",
-        "//third_party/catapult/third_party/typ",
       ]
       if (is_win) {
         data_deps += [ "//build/win:copy_cdb_to_output" ]
@@ -1084,7 +1080,6 @@ if (!is_ios && !use_qt) {
       "//third_party/blink/public:blink_devtools_inspector_resources",
       "//third_party/blink/public/mojom:mojom_platform_js_data_deps",
       "//third_party/blink/renderer/core/html:js_files_for_form_controls_web_tests",
-      "//third_party/catapult/third_party/typ",
       "//third_party/mesa_headers",
       "//tools/imagediff",
     ]
@@ -1152,7 +1147,6 @@ if (!is_ios && !use_qt) {
 
     if (is_android) {
       data += [
-        "//third_party/catapult/",
         "//build/android/",
       ]
     }
@@ -1259,11 +1253,6 @@ if (!is_ios && !use_qt) {
       "//third_party/blink/web_tests/StaleTestExpectations",
       "//third_party/blink/web_tests/TestExpectations",
       "//third_party/blink/web_tests/VirtualTestSuites",
-      "//third_party/catapult/common/py_utils/",
-      "//third_party/catapult/devil/",
-      "//third_party/catapult/dependency_manager/",
-      "//third_party/catapult/third_party/zipfile/",
-      "//third_party/catapult/third_party/typ/",
       "//third_party/depot_tools/pylint",
       "//third_party/depot_tools/pylint-1.5",
       "//third_party/depot_tools/pylint_main.py",
diff --git a/chromium/chrome/chrome_paks.gni b/chromium/chrome/chrome_paks.gni
index 9323a774a56..0362b6501aa 100644
--- a/src/3rdparty/chromium/chrome/chrome_paks.gni
+++ b/src/3rdparty/chromium/chrome/chrome_paks.gni
@@ -94,7 +94,6 @@ template("chrome_extra_paks") {
       "$root_gen_dir/chrome/common_resources.pak",
       "$root_gen_dir/components/autofill/core/browser/autofill_address_rewriter_resources.pak",
       "$root_gen_dir/components/components_resources.pak",
-      "$root_gen_dir/content/browser/tracing/tracing_resources.pak",
       "$root_gen_dir/content/content_resources.pak",
       "$root_gen_dir/mojo/public/js/mojo_bindings_resources.pak",
       "$root_gen_dir/net/net_resources.pak",
@@ -110,7 +109,6 @@ template("chrome_extra_paks") {
       "//components/autofill/core/browser:autofill_address_rewriter_resources",
       "//components/resources",
       "//content:content_resources",
-      "//content/browser/tracing:resources",
       "//mojo/public/js:resources",
       "//net:net_resources",
       "//skia:skia_resources",
diff --git a/chromium/chrome/test/BUILD.gn b/chromium/chrome/test/BUILD.gn
index 1a369fa56d2..eb5bc9676fb 100644
--- a/src/3rdparty/chromium/chrome/test/BUILD.gn
+++ b/src/3rdparty/chromium/chrome/test/BUILD.gn
@@ -7103,8 +7103,6 @@ if (!is_fuchsia && !is_android) {
       "//chrome/test/data/password/captured_sites/",
       "//chrome/test/data/web_page_replay_go_helper_scripts/automation_helper.js",
       "//components/test/data/autofill/web_page_replay_support_files/",
-      "//third_party/catapult/telemetry/telemetry/bin/",
-      "//third_party/catapult/web_page_replay_go/deterministic.js",
     ]
 
     if (is_linux || is_chromeos || is_win) {
@@ -7141,7 +7139,6 @@ if (!is_fuchsia && !is_android) {
 
       # TODO(uwyiming@chromium.org) create a gn target for Web Page Replay Go (WPR Go) and only WPR Go.
       # So that test targets requiring WPR Go does not pull down the whole telemetry tool chain.
-      "//third_party/catapult:telemetry_chrome_test_support",
       "//third_party/hunspell",
       "//third_party/icu",
       "//third_party/libpng",
@@ -7171,7 +7168,6 @@ if (!is_fuchsia && !is_android) {
     deps = [ "//tools/perf/chrome_telemetry_build:telemetry_chrome_test" ]
 
     data = [
-      "//third_party/catapult/telemetry/telemetry/internal/bin/",
       "//tools/perf/run_telemetry_tests",
 
       # For isolate contract.
@@ -7189,7 +7185,6 @@ if (!is_fuchsia && !is_android) {
   group("telemetry_gpu_unittests") {
     testonly = true
     deps = [
-      "//third_party/catapult:telemetry_chrome_test_support",
       "//tools/metrics:metrics_python_tests",
     ]
     data = [
@@ -7313,7 +7308,6 @@ if (is_mac || is_win || is_android) {
       "//testing/scripts",
       "//testing/test_env.py",
       "//testing/xvfb.py",
-      "//third_party/catapult",
       "//tools",
     ]
   }
diff --git a/chromium/content/browser/BUILD.gn b/chromium/content/browser/BUILD.gn
index 1466f33d462..51039e0da19 100644
--- a/src/3rdparty/chromium/content/browser/BUILD.gn
+++ b/src/3rdparty/chromium/content/browser/BUILD.gn
@@ -2169,7 +2169,6 @@ jumbo_static_library("browser") {
   if (!is_android) {
     deps += [
       "//components/vector_icons",
-      "//content/browser/tracing:resources",
     ]
   }
 
diff --git a/chromium/content/browser/tracing/BUILD.gn b/chromium/content/browser/tracing/BUILD.gn
deleted file mode 100644
index eac05999fac..00000000000
--- a/src/3rdparty/chromium/content/browser/tracing/BUILD.gn
+++ /dev/null
@@ -1,51 +0,0 @@
-# Copyright 2014 The Chromium Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-import("//tools/grit/grit_rule.gni")
-
-# generate_about_tracing puts its files in this directory
-tracing_gen_dir = "$root_gen_dir/content/browser/tracing"
-
-# The script just writes filename with no dirs to the .grd, so we always need
-# this file to be in the same directory as the inputs.
-tracing_grd = "$tracing_gen_dir/tracing_resources.grd"
-
-action("generate_tracing_grd") {
-  visibility = [ ":*" ]  # Depend on ":resources" to get this.
-  script = "generate_trace_viewer_grd.py"
-
-  input_pages = [
-    "$tracing_gen_dir/about_tracing.html",
-    "$tracing_gen_dir/about_tracing.js",
-  ]
-  inputs = input_pages
-  outputs = [ tracing_grd ]
-
-  args = rebase_path(input_pages, target_gen_dir) + [
-           "--output",
-           rebase_path(tracing_grd, root_build_dir),
-         ]
-
-  deps = [ "//third_party/catapult/tracing:generate_about_tracing" ]
-}
-
-grit("resources") {
-  source = tracing_grd
-
-  # Required because the .grd is generated.
-  enable_input_discovery_for_gn_analyze = false
-
-  outputs = [
-    "grit/tracing_resources.h",
-    "tracing_resources.pak",
-  ]
-
-  # resource_ids has an entry for our .grd file that looks like:
-  # "<(SHARED_INTERMEDIATE_DIR)/content/browser/tracing/tracing_resources.grd"
-  # and what we pass here should make that resolve to our .grd file.
-  defines =
-      [ "SHARED_INTERMEDIATE_DIR=" + rebase_path(root_gen_dir, root_build_dir) ]
-
-  deps = [ ":generate_tracing_grd" ]
-}
diff --git a/chromium/content/browser/tracing/tracing_ui.cc b/chromium/content/browser/tracing/tracing_ui.cc
index 2bffb5eb3b0..8965922dfba 100644
--- a/src/3rdparty/chromium/content/browser/tracing/tracing_ui.cc
+++ b/src/3rdparty/chromium/content/browser/tracing/tracing_ui.cc
@@ -27,7 +27,6 @@
 #include "base/strings/stringprintf.h"
 #include "base/trace_event/trace_event.h"
 #include "base/values.h"
-#include "content/browser/tracing/grit/tracing_resources.h"
 #include "content/browser/tracing/tracing_controller_impl.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/browser_thread.h"
@@ -242,8 +241,6 @@ TracingUI::TracingUI(WebUI* web_ui)
   WebUIDataSource* source = WebUIDataSource::Create(kChromeUITracingHost);
   source->DisableTrustedTypesCSP();
   source->UseStringsJs();
-  source->SetDefaultResource(IDR_TRACING_HTML);
-  source->AddResourcePath("tracing.js", IDR_TRACING_JS);
   source->SetRequestFilter(base::BindRepeating(OnShouldHandleRequest),
                            base::BindRepeating(OnTracingRequest));
   WebUIDataSource::Add(browser_context, source);
diff --git a/chromium/content/shell/BUILD.gn b/chromium/content/shell/BUILD.gn
index 56c0e8b48e3..6e4ffbe962d 100644
--- a/src/3rdparty/chromium/content/shell/BUILD.gn
+++ b/src/3rdparty/chromium/content/shell/BUILD.gn
@@ -390,7 +390,6 @@ repack("pak") {
   sources = [
     "$root_gen_dir/content/app/resources/content_resources_100_percent.pak",
     "$root_gen_dir/content/browser/resources/media/media_internals_resources.pak",
-    "$root_gen_dir/content/browser/tracing/tracing_resources.pak",
     "$root_gen_dir/content/browser/webrtc/resources/webrtc_internals_resources.pak",
     "$root_gen_dir/content/content_resources.pak",
     "$root_gen_dir/content/dev_ui_content_resources.pak",
@@ -413,7 +412,6 @@ repack("pak") {
     "//content:dev_ui_content_resources",
     "//content/app/resources",
     "//content/browser/resources/media:media_internals_resources",
-    "//content/browser/tracing:resources",
     "//content/browser/webrtc/resources",
     "//mojo/public/js:resources",
     "//net:net_resources",
diff --git a/chromium/fuchsia/engine/BUILD.gn b/chromium/fuchsia/engine/BUILD.gn
index a502b7fc273..39df2a7028a 100644
--- a/src/3rdparty/chromium/fuchsia/engine/BUILD.gn
+++ b/src/3rdparty/chromium/fuchsia/engine/BUILD.gn
@@ -43,7 +43,6 @@ repack("web_engine_pak") {
     "$root_gen_dir/components/components_resources.pak",
     "$root_gen_dir/components/strings/components_strings_en-US.pak",
     "$root_gen_dir/content/app/resources/content_resources_100_percent.pak",
-    "$root_gen_dir/content/browser/tracing/tracing_resources.pak",
     "$root_gen_dir/content/content_resources.pak",
     "$root_gen_dir/content/dev_ui_content_resources.pak",
     "$root_gen_dir/mojo/public/js/mojo_bindings_resources.pak",
@@ -66,7 +65,6 @@ repack("web_engine_pak") {
     "//content:content_resources",
     "//content:dev_ui_content_resources",
     "//content/app/resources",
-    "//content/browser/tracing:resources",
     "//gpu/command_buffer/service",
     "//mojo/public/js:resources",
     "//net:net_resources",
diff --git a/chromium/headless/BUILD.gn b/chromium/headless/BUILD.gn
index d2ab76aed32..15e4b78009d 100644
--- a/src/3rdparty/chromium/headless/BUILD.gn
+++ b/src/3rdparty/chromium/headless/BUILD.gn
@@ -37,7 +37,6 @@ repack("pak") {
     "$root_gen_dir/components/components_resources.pak",
     "$root_gen_dir/components/strings/components_strings_en-US.pak",
     "$root_gen_dir/content/app/resources/content_resources_100_percent.pak",
-    "$root_gen_dir/content/browser/tracing/tracing_resources.pak",
     "$root_gen_dir/content/content_resources.pak",
     "$root_gen_dir/content/dev_ui_content_resources.pak",
     "$root_gen_dir/headless/headless_lib_resources.pak",
@@ -65,7 +64,6 @@ repack("pak") {
     "//content:content_resources",
     "//content:dev_ui_content_resources",
     "//content/app/resources",
-    "//content/browser/tracing:resources",
     "//mojo/public/js:resources",
     "//net:net_resources",
     "//third_party/blink/public:resources",
diff --git a/chromium/mojo/public/tools/BUILD.gn b/chromium/mojo/public/tools/BUILD.gn
index 4c68350b399..1cc01256f00 100644
--- a/src/3rdparty/chromium/mojo/public/tools/BUILD.gn
+++ b/src/3rdparty/chromium/mojo/public/tools/BUILD.gn
@@ -14,5 +14,4 @@ group("mojo_python_unittests") {
     "//testing/xvfb.py",
   ]
   deps = [ "//mojo/public/tools/mojom/mojom:tests" ]
-  data_deps = [ "//third_party/catapult/third_party/typ/" ]
 }
diff --git a/chromium/testing/BUILD.gn b/chromium/testing/BUILD.gn
index 56ebf8d46c9..7d51bc0ccf7 100644
--- a/src/3rdparty/chromium/testing/BUILD.gn
+++ b/src/3rdparty/chromium/testing/BUILD.gn
@@ -27,7 +27,6 @@ group("run_perf_test") {
 
   data_deps = [
     ":test_scripts_shared",
-    "//third_party/catapult/tracing:convert_chart_json",
   ]
 
   if (is_android) {
diff --git a/chromium/third_party/webrtc/test/BUILD.gn b/chromium/third_party/webrtc/test/BUILD.gn
index 58d3dab5219..48328298d2e 100644
--- a/src/3rdparty/chromium/third_party/webrtc/test/BUILD.gn
+++ b/src/3rdparty/chromium/third_party/webrtc/test/BUILD.gn
@@ -258,10 +258,6 @@ rtc_library("perf_test") {
   absl_deps = [ "//third_party/abseil-cpp/absl/types:optional" ]
   if (rtc_enable_protobuf) {
     sources += [ "testsupport/perf_test_histogram_writer.cc" ]
-    deps += [
-      "//third_party/catapult/tracing/tracing:histogram",
-      "//third_party/catapult/tracing/tracing:reserved_infos",
-    ]
   } else {
     sources += [ "testsupport/perf_test_histogram_writer_no_protobuf.cc" ]
   }
@@ -566,7 +562,6 @@ if (rtc_include_tests) {
 
     if (rtc_enable_protobuf) {
       sources += [ "testsupport/perf_test_histogram_writer_unittest.cc" ]
-      deps += [ "//third_party/catapult/tracing/tracing:histogram" ]
     }
 
     data = test_support_unittests_resources
diff --git a/chromium/tools/binary_size/BUILD.gn b/chromium/tools/binary_size/BUILD.gn
index e6806bf7754..2c985d15fab 100644
--- a/src/3rdparty/chromium/tools/binary_size/BUILD.gn
+++ b/src/3rdparty/chromium/tools/binary_size/BUILD.gn
@@ -18,7 +18,6 @@ python_library("binary_size_trybot_py") {
 python_library("sizes_py") {
   testonly = true
   pydeps_file = "sizes.pydeps"
-  data_deps = [ "//third_party/catapult/tracing:convert_chart_json" ]
 }
 
 if (is_linux || is_chromeos) {
diff --git a/chromium/tools/grit/BUILD.gn b/chromium/tools/grit/BUILD.gn
index 1cd3c75b553..60c4cf2f77a 100644
--- a/src/3rdparty/chromium/tools/grit/BUILD.gn
+++ b/src/3rdparty/chromium/tools/grit/BUILD.gn
@@ -33,7 +33,6 @@ group("grit_python_unittests") {
     "//testing/scripts/run_isolated_script_test.py",
     "//testing/xvfb.py",
     "//tools/grit/",
-    "//third_party/catapult/third_party/typ/",
   ]
 }
 
diff --git a/chromium/tools/gritsettings/resource_ids.spec b/chromium/tools/gritsettings/resource_ids.spec
index d0a4545514c..80b0bf1737b 100644
--- a/src/3rdparty/chromium/tools/gritsettings/resource_ids.spec
+++ b/src/3rdparty/chromium/tools/gritsettings/resource_ids.spec
@@ -499,12 +499,6 @@
   "content/shell/shell_resources.grd": {
     "includes": [2940],
   },
-
-  # This file is generated during the build.
-  "<(SHARED_INTERMEDIATE_DIR)/content/browser/tracing/tracing_resources.grd": {
-    "META": {"sizes": {"includes": [20],}},
-    "includes": [2960],
-  },
   # END content/ section.
 
   # START ios/web/ section.
diff --git a/chromium/tools/metrics/BUILD.gn b/chromium/tools/metrics/BUILD.gn
index 846d5248bfa..cb57d2bdae1 100644
--- a/src/3rdparty/chromium/tools/metrics/BUILD.gn
+++ b/src/3rdparty/chromium/tools/metrics/BUILD.gn
@@ -56,7 +56,6 @@ group("metrics_python_tests") {
     "//testing/scripts/common.py",
     "//testing/xvfb.py",
     "//testing/test_env.py",
-    "//third_party/catapult/third_party/typ/",
 
     # Scripts we depend on. Their unit tests are also included.
     "//tools/json_comment_eater/json_comment_eater.py",
diff --git a/chromium/tools/perf/chrome_telemetry_build/BUILD.gn b/chromium/tools/perf/chrome_telemetry_build/BUILD.gn
index 280bb754c2c..c287fdcebb3 100644
--- a/src/3rdparty/chromium/tools/perf/chrome_telemetry_build/BUILD.gn
+++ b/src/3rdparty/chromium/tools/perf/chrome_telemetry_build/BUILD.gn
@@ -107,7 +107,6 @@ group("telemetry_chrome_test_without_chrome") {
     "//tools/perf/core/",  # chrome_telemetry_build/ depends on core/
   ]
   data_deps = [
-    "//third_party/catapult:telemetry_chrome_test_support",
     "//tools/metrics:metrics_python_tests",
   ]
 
@@ -151,7 +150,5 @@ group("telemetry_chrome_test_without_chrome") {
       "//build/android:devil_chromium_py",
       "//build/android:stack_tools",
     ]
-  } else if (!is_fuchsia) {
-    data_deps += [ "//third_party/catapult/telemetry:bitmaptools" ]
   }
 }
diff --git a/chromium/tools/perf/core/perfetto_binary_roller/BUILD.gn b/chromium/tools/perf/core/perfetto_binary_roller/BUILD.gn
index 7fe48cba143..e9c7f0261a5 100644
--- a/src/3rdparty/chromium/tools/perf/core/perfetto_binary_roller/BUILD.gn
+++ b/src/3rdparty/chromium/tools/perf/core/perfetto_binary_roller/BUILD.gn
@@ -7,7 +7,6 @@ import("//build/util/generate_wrapper.gni")
 generate_wrapper("upload_trace_processor") {
   testonly = true
   data_deps = [
-    "//third_party/catapult:telemetry_chrome_test_support",
     "//third_party/perfetto/src/trace_processor:trace_processor_shell",
   ]
   data = [
diff --git a/chromium/tools/polymer/BUILD.gn b/chromium/tools/polymer/BUILD.gn
index 092066b7c04..d115144cd61 100644
--- a/src/3rdparty/chromium/tools/polymer/BUILD.gn
+++ b/src/3rdparty/chromium/tools/polymer/BUILD.gn
@@ -10,6 +10,5 @@ group("polymer_tools_python_unittests") {
     "//testing/scripts/run_isolated_script_test.py",
     "//testing/xvfb.py",
     "//tools/polymer/",
-    "//third_party/catapult/third_party/typ/",
   ]
 }
diff --git a/chromium/v8/tools/BUILD.gn b/chromium/v8/tools/BUILD.gn
index 2f8197dd369..83304b6342b 100644
--- a/src/3rdparty/chromium/v8/tools/BUILD.gn
+++ b/src/3rdparty/chromium/v8/tools/BUILD.gn
@@ -31,10 +31,6 @@ group("v8_android_test_runner_deps") {
 
   if (is_android && !build_with_chromium) {
     data_deps = [ "//build/android:test_runner_py" ]
-    data = [
-      # This is used by android.py, but not included by test_runner_py above.
-      "//third_party/catapult/devil/devil/android/perf/",
-    ]
   }
 }
 
diff --git a/chromium/weblayer/shell/BUILD.gn b/chromium/weblayer/shell/BUILD.gn
index 66984a7da54..1815fad623d 100644
--- a/src/3rdparty/chromium/weblayer/shell/BUILD.gn
+++ b/src/3rdparty/chromium/weblayer/shell/BUILD.gn
@@ -161,7 +161,6 @@ repack("support_pak") {
     "$root_gen_dir/components/strings/components_locale_settings_en-US.pak",
     "$root_gen_dir/components/strings/components_strings_en-US.pak",
     "$root_gen_dir/content/app/resources/content_resources_100_percent.pak",
-    "$root_gen_dir/content/browser/tracing/tracing_resources.pak",
     "$root_gen_dir/content/content_resources.pak",
     "$root_gen_dir/content/dev_ui_content_resources.pak",
     "$root_gen_dir/mojo/public/js/mojo_bindings_resources.pak",
@@ -182,7 +181,6 @@ repack("support_pak") {
     "//content:content_resources",
     "//content:dev_ui_content_resources",
     "//content/app/resources",
-    "//content/browser/tracing:resources",
     "//mojo/public/js:resources",
     "//net:net_resources",
     "//third_party/blink/public:resources",
-- 
2.35.1

Twelfth, the second gentoo patch to remove the dependnecy on catapult.

From b60fc250d65144532cd47eac72279e93baaec2b8 Mon Sep 17 00:00:00 2001
From: Jimi Huotari <chiitoo@gentoo.org>
Date: Wed, 6 Apr 2022 14:35:14 +0300
Subject: [PATCH] Remove dependency on catapult

---
 src/core/qtwebengine_resources.gni | 2 --
 1 file changed, 2 deletions(-)

diff --git a/src/core/qtwebengine_resources.gni b/src/core/qtwebengine_resources.gni
index 3bf1a5d57..29fd2603c 100644
--- a/src/core/qtwebengine_resources.gni
+++ b/src/core/qtwebengine_resources.gni
@@ -27,7 +27,6 @@ repack("qtwebengine_repack_resources") {
     "$root_gen_dir/components/components_resources.pak",
     "$root_gen_dir/components/dev_ui_components_resources.pak",
     "$root_gen_dir/content/browser/resources/media/media_internals_resources.pak",
-    "$root_gen_dir/content/browser/tracing/tracing_resources.pak",
     "$root_gen_dir/content/content_resources.pak",
     "$root_gen_dir/content/dev_ui_content_resources.pak",
     "$root_gen_dir/mojo/public/js/mojo_bindings_resources.pak",
@@ -44,7 +43,6 @@ repack("qtwebengine_repack_resources") {
      "//components/resources:components_resources_grit",
      "//components/resources:dev_ui_components_resources_grit",
      "//content/browser/resources/media:media_internals_resources",
-     "//content/browser/tracing:resources",
      "//content:content_resources_grit",
      "//content:dev_ui_content_resources_grit",
      "//mojo/public/js:resources",
-- 
2.35.1