[neon/qt/qtwebengine/Neon/release] debian: Use Python 3 instead of Python 2 for building.
Dmitry Shachnev
null at kde.org
Mon Jan 9 14:26:51 GMT 2023
Git commit 0db62e47f0e2f5e4e00193b65da912fe0083088c by Dmitry Shachnev.
Committed on 27/11/2022 at 09:03.
Pushed by jriddell into branch 'Neon/release'.
Use Python 3 instead of Python 2 for building.
- Update build-dependency.
- Add python3.patch, inspired by Arch Linux but using versioned python3.
- Add chromium-python3.patch, copied from Arch Linux.
Closes: #938322.
M +4 -0 debian/changelog
M +1 -1 debian/control
A +1687 -0 debian/patches/chromium-python3.patch
A +159 -0 debian/patches/python3.patch
M +2 -0 debian/patches/series
M +1 -1 debian/rules
https://invent.kde.org/neon/qt/qtwebengine/commit/0db62e47f0e2f5e4e00193b65da912fe0083088c
diff --git a/debian/changelog b/debian/changelog
index 3f3ed12..d10fa7c 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -13,6 +13,10 @@ qtwebengine-opensource-src (5.15.11+dfsg-1) UNRELEASED; urgency=medium
- Drop debian/missing-sources/jszip-2.4.0.
- Stop copying pako.min.js and d3.min.js in debian/rules.
- Drop libjs-d3 and node-pako build-dependencies.
+ * Use Python 3 instead of Python 2 for building (closes: #938322).
+ - Update build-dependency.
+ - Add python3.patch, inspired by Arch Linux but using versioned python3.
+ - Add chromium-python3.patch, copied from Arch Linux.
-- Debian Qt/KDE Maintainers <debian-qt-kde at lists.debian.org> Fri, 25 Nov 2022 19:50:58 +0300
diff --git a/debian/control b/debian/control
index 069067b..7abb229 100644
--- a/debian/control
+++ b/debian/control
@@ -70,7 +70,7 @@ Build-Depends: binutils (>= 2.32-8~),
pkg-config,
pkg-kde-tools,
protobuf-compiler,
- python2,
+ python3,
qtbase5-dev (>= 5.15.6+dfsg~),
qtbase5-private-dev (>= 5.15.6+dfsg~),
qtdeclarative5-private-dev (>= 5.15.6+dfsg~),
diff --git a/debian/patches/chromium-python3.patch b/debian/patches/chromium-python3.patch
new file mode 100644
index 0000000..d3c84a2
--- /dev/null
+++ b/debian/patches/chromium-python3.patch
@@ -0,0 +1,1687 @@
+Description: update Chromium code for compatibility with Python 3
+Origin: https://github.com/archlinux/svntogit-packages/blob/packages/qt5-webengine/trunk/qt5-webengine-chromium-python3.patch
+Last-Update: 2022-11-25
+
+--- a/src/3rdparty/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/python3
+ # 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.
+@@ -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 python3.
+ #
+ # E.g. $HOME/.vpython-root/dd50d3/bin/python
+ # E.g. /b/s/w/ir/cache/vpython/ab5c79/bin/python
+--- a/src/3rdparty/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
+--- a/src/3rdparty/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'))
+
+
+--- a/src/3rdparty/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 += [
+--- a/src/3rdparty/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())
+--- a/src/3rdparty/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.dir
+ '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'
+
+--- a/src/3rdparty/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):
+--- a/src/3rdparty/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):
+--- a/src/3rdparty/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_module
+ 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)
+--- a/src/3rdparty/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, de
+ """
+ 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_nam
+ 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(blin
+ """
+ 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&& ${{{_1}}} = "
+--- a/src/3rdparty/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/callback_interface.py
++++ b/src/3rdparty/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/callback_interface.py
+@@ -177,7 +177,7 @@ def generate_callback_interface(callback
+ prop_install_mode=PropInstallMode.UNCONDITIONAL,
+ trampoline_var_name=None,
+ attribute_entries=[],
+- constant_entries=filter(is_unconditional, constant_entries),
++ constant_entries=list(filter(is_unconditional, constant_entries)),
+ exposed_construct_entries=[],
+ operation_entries=[])
+ (install_interface_template_decl, install_interface_template_def,
+--- a/src/3rdparty/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/code_node.py
++++ b/src/3rdparty/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/code_node.py
+@@ -503,13 +503,13 @@ class CompositeNode(CodeNode):
+ gensym_kwargs = {}
+ template_vars = {}
+ for arg in args:
+- assert isinstance(arg, (CodeNode, int, long, str))
++ assert isinstance(arg, (CodeNode, int, str))
+ gensym = CodeNode.gensym()
+ gensym_args.append("${{{}}}".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] = "${{{}}}".format(gensym)
+ template_vars[gensym] = value
+@@ -602,7 +602,7 @@ class ListNode(CodeNode):
+ def insert(self, index, node):
+ if node is None:
+ return
+- assert isinstance(index, (int, long))
++ assert isinstance(index, int)
+ assert isinstance(node, CodeNode)
+ assert node.outer is None and node.prev is None
+
+@@ -721,7 +721,7 @@ class SymbolScopeNode(SequenceNode):
+ if not scope_chains:
+ return counts
+
+- self_index = iter(scope_chains).next().index(self)
++ self_index = next(iter(scope_chains)).index(self)
+ scope_chains = map(
+ lambda scope_chain: scope_chain[self_index + 1:], scope_chains)
+ scope_to_likeliness = {}
+--- a/src/3rdparty/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/codegen_expr.py
++++ b/src/3rdparty/chromium/third_party/blink/renderer/bindings/scripts/bind_gen/codegen_expr.py
+@@ -109,7 +109,7 @@ def expr_and(terms):
+
+ if any(term.is_always_false for term in terms):
+ return _Expr(False)
+- terms = filter(lambda x: not x.is_always_true, terms)
++ terms = list(filter(lambda x: not x.is_always_true, terms))
+ if not terms:
+ return _Expr(True)
+ if len(terms) == 1:
+@@ -124,7 +124,7 @@ def expr_or(terms):
+
+ if any(term.is_always_true for term in terms):
+ return _Expr(True)
+- terms = filter(lambda x: not x.is_always_false, terms)
++ terms = list(filter(lambda x: not x.is_always_false, terms))
+ if not terms:
+ return _Expr(False)
+ if len(terms) == 1:
+@@ -222,7 +222,7 @@ def expr_from_exposure(exposure,
+ elif exposure.only_in_secure_contexts is False:
+ secure_context_term = _Expr(True)
+ else:
+- terms = map(ref_enabled, exposure.only_in_secure_contexts)
++ terms = list(map(ref_enabled, exposure.only_in_secure_contexts))
+ secure_context_term = expr_or(
+ [_Expr("${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)]))
+--- a/src/3rdparty/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.Formatte
+ 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:
+--- a/src/3rdparty/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, f
+ # 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'))
+--- a/src/3rdparty/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
+--- a/src/3rdparty/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(_PropEn
+ 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(_PropEntr
+ 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_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} = ${v8_context}->Glob
+ "V8DOMConfiguration::InstallConstants(${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} = ${v8_context}->Glob
+ "V8DOMConfiguration::InstallConstants(${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_cont
+ 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_refere
+ 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_pr
+ 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_identif
+ 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_identif
+ 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_identif
+ 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,
+--- a/src/3rdparty/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)
+--- a/src/3rdparty/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()
+
+--- a/src/3rdparty/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)
+--- a/src/3rdparty/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)
+
+
++ at 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
+
+
+--- a/src/3rdparty/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
+--- a/src/3rdparty/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
+--- a/src/3rdparty/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_f
+ 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(
+--- a/src/3rdparty/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
+--- a/src/3rdparty/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(Compo
+
+ @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(Compo
+
+
+ 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, d
+ 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
+--- a/src/3rdparty/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, interfa
+ 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_o
+
+ # 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
+--- a/src/3rdparty/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:
+--- a/src/3rdparty/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):
+--- a/src/3rdparty/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,
+ 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
+--- a/src/3rdparty/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())
+--- a/src/3rdparty/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 Ru
+ 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))
+
+--- a/src/3rdparty/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(
+--- a/src/3rdparty/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':
+--- a/src/3rdparty/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, WithExt
+ 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, WithExt
+ 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, WithExt
+ 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, WithExt
+ 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
+ ])
+
+--- a/src/3rdparty/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))
+--- a/src/3rdparty/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.
+--- a/src/3rdparty/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, WithExt
+ 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
+--- a/src/3rdparty/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* i
+ 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
+ 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}};
+--- a/src/3rdparty/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
+
+ 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_)
+--- a/src/3rdparty/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_g
+ 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)
+--- a/src/3rdparty/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__':
+--- a/src/3rdparty/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,
+--- a/src/3rdparty/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
+--- a/src/3rdparty/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(BaseRuntimeFe
+ 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):
+--- a/src/3rdparty/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
+
+ 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}}FunctionM
+ // 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 %}
+ };
+--- a/src/3rdparty/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(co
+ 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())) {
+--- a/src/3rdparty/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) {
+--- a/src/3rdparty/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 %}
+--- a/src/3rdparty/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 %}
+
+--- a/src/3rdparty/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_di
+
+ 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):
+--- a/src/3rdparty/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")
+--- a/src/3rdparty/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, file
+ ['--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)
+--- a/src/3rdparty/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())
+
+--- a/src/3rdparty/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'))
+
+
+--- a/src/3rdparty/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):
+--- a/src/3rdparty/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
+--- a/src/3rdparty/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
+
+
+--- a/src/3rdparty/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_cons
+ } // 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, platfor
+ 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()
+--- a/src/3rdparty/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_platfor
+
+ """
+
++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()
diff --git a/debian/patches/python3.patch b/debian/patches/python3.patch
new file mode 100644
index 0000000..9837209
--- /dev/null
+++ b/debian/patches/python3.patch
@@ -0,0 +1,159 @@
+Description: replace Python 2 with Python 3 in the build system
+Author: Dmitry Shachnev <mitya57 at debian.org>
+Last-Update: 2022-11-25
+Forwarded: not-needed
+
+--- a/configure.pri
++++ b/configure.pri
+@@ -6,23 +6,6 @@ QTWEBENGINE_SOURCE_TREE = $$PWD
+
+ equals(QMAKE_HOST.os, Windows): EXE_SUFFIX = .exe
+
+-defineTest(isPythonVersionSupported) {
+- python = $$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}.$${python_patch_version}.")
+- return(false)
+-}
+-
+ defineTest(qtConfTest_detectJumboBuild) {
+ mergeLimit = $$eval(config.input.merge_limit)
+ mergeLimit = $$find(mergeLimit, "\\d")
+@@ -52,22 +35,18 @@ defineTest(qtConfReport_jumboBuild) {
+ qtConfReportPadded($${1}, $$mergeLimit)
+ }
+
+-defineTest(qtConfTest_detectPython2) {
+- python = $$qtConfFindInPath("python2$$EXE_SUFFIX")
++defineTest(qtConfTest_detectPython3) {
++ python = $$qtConfFindInPath("python3$$EXE_SUFFIX")
+ isEmpty(python) {
+- qtLog("'python2$$EXE_SUFFIX' not found in PATH. Checking for 'python$$EXE_SUFFIX'.")
++ qtLog("'python3$$EXE_SUFFIX' not found in PATH. Checking for 'python$$EXE_SUFFIX'.")
+ python = $$qtConfFindInPath("python$$EXE_SUFFIX")
+ }
+ isEmpty(python) {
+ qtLog("'python$$EXE_SUFFIX' not found in PATH. Giving up.")
+ return(false)
+ }
+- !isPythonVersionSupported($$python) {
+- qtLog("A suitable Python 2 executable could not be located.")
+- return(false)
+- }
+
+- # Make tests.python2.location available in configure.json.
++ # Make tests.python3.location available in configure.json.
+ $${1}.location = $$clean_path($$python)
+ export($${1}.location)
+ $${1}.cache += location
+--- a/mkspecs/features/functions.prf
++++ b/mkspecs/features/functions.prf
+@@ -44,11 +44,11 @@ defineReplace(which) {
+
+ # Returns the unquoted path to the python executable.
+ defineReplace(pythonPath) {
+- isEmpty(QMAKE_PYTHON2) {
++ isEmpty(QMAKE_PYTHON3) {
+ # Fallback for building QtWebEngine with Qt < 5.8
+- QMAKE_PYTHON2 = python
++ QMAKE_PYTHON3 = python
+ }
+- return($$QMAKE_PYTHON2)
++ return($$QMAKE_PYTHON3)
+ }
+
+ # Returns the python executable for use with shell / make targets.
+--- a/src/buildtools/config/support.pri
++++ b/src/buildtools/config/support.pri
+@@ -21,7 +21,7 @@ defineReplace(qtwebengine_checkWebEngine
+ !qtwebengine_checkForGperf(QtWebEngine):return(false)
+ !qtwebengine_checkForBison(QtWebEngine):return(false)
+ !qtwebengine_checkForFlex(QtWebEngine):return(false)
+- !qtwebengine_checkForPython2(QtWebEngine):return(false)
++ !qtwebengine_checkForPython3(QtWebEngine):return(false)
+ !qtwebengine_checkForNodejs(QtWebEngine):return(false)
+ !qtwebengine_checkForSanitizer(QtWebEngine):return(false)
+ linux:!qtwebengine_checkForPkgCfg(QtWebEngine):return(false)
+@@ -51,7 +51,7 @@ defineReplace(qtwebengine_checkPdfError)
+ !qtwebengine_checkForGperf(QtPdf):return(false)
+ !qtwebengine_checkForBison(QtPdf):return(false)
+ !qtwebengine_checkForFlex(QtPdf):return(false)
+- !qtwebengine_checkForPython2(QtPdf):return(false)
++ !qtwebengine_checkForPython3(QtPdf):return(false)
+ !qtwebengine_checkForSanitizer(QtPdf):return(false)
+ linux:!qtwebengine_checkForPkgCfg(QtPdf):return(false)
+ linux:!qtwebengine_checkForHostPkgCfg(QtPdf):return(false)
+@@ -143,10 +143,10 @@ defineTest(qtwebengine_checkForFlex) {
+ return(true)
+ }
+
+-defineTest(qtwebengine_checkForPython2) {
++defineTest(qtwebengine_checkForPython3) {
+ module = $$1
+- !qtConfig(webengine-python2) {
+- qtwebengine_skipBuild("Python version 2 (2.7.5 or later) is required to build $${module}.")
++ !qtConfig(webengine-python3) {
++ qtwebengine_skipBuild("Python version 3 is required to build $${module}.")
+ return(false)
+ }
+ return(true)
+--- a/src/buildtools/configure.json
++++ b/src/buildtools/configure.json
+@@ -295,9 +295,9 @@
+ "label": "system ninja",
+ "type": "detectNinja"
+ },
+- "webengine-python2": {
+- "label": "python2",
+- "type": "detectPython2",
++ "webengine-python3": {
++ "label": "python3",
++ "type": "detectPython3",
+ "log": "location"
+ },
+ "webengine-winversion": {
+@@ -374,7 +374,7 @@
+ && features.webengine-gperf
+ && features.webengine-bison
+ && features.webengine-flex
+- && features.webengine-python2
++ && features.webengine-python3
+ && 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-python3
+ && (!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-python3": {
++ "label": "python3",
++ "condition": "tests.webengine-python3",
+ "output": [
+ "privateFeature",
+- { "type": "varAssign", "name": "QMAKE_PYTHON2", "value": "tests.webengine-python2.location" }
++ { "type": "varAssign", "name": "QMAKE_PYTHON3", "value": "tests.webengine-python3.location" }
+ ]
+ },
+ "webengine-gperf": {
diff --git a/debian/patches/series b/debian/patches/series
index 4bfd8c4..48ea6b4 100644
--- a/debian/patches/series
+++ b/debian/patches/series
@@ -16,3 +16,5 @@ mips64el-kernel_stat64.patch
armhf-no-thumb.patch
gcc-12.patch
disable-catapult.patch
+python3.patch
+chromium-python3.patch
diff --git a/debian/rules b/debian/rules
index 00620ad..c4f7a63 100755
--- a/debian/rules
+++ b/debian/rules
@@ -72,7 +72,7 @@ override_dh_auto_clean:
override_dh_auto_configure:
# Run qmake once to create .qmake.conf and be sure to append the following values.
- qmake QT_BUILD_PARTS+=tests QMAKE_EXTRA_ARGS+="$(config_args)" QMAKE_PYTHON2=python2
+ qmake QT_BUILD_PARTS+=tests QMAKE_EXTRA_ARGS+="$(config_args)" QMAKE_PYTHON3=python3
# Enable gstabs debugging symbols only on gstab_architectures.
ifeq ($(DEB_HOST_ARCH),$(findstring $(DEB_HOST_ARCH), $(gstab_architectures)))
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