Update //third_party/protobuf to version 3.

third_party/protobuf/BUILD.gn

 # 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.
 
-if (is_win) {
-  config_h_dir = "vsprojects"
-} else {
-  config_h_dir = "."
-}
-
 config("protobuf_config") {
-  include_dirs = [
-    "src",
-    config_h_dir,
-  ]
+  include_dirs = [ "src" ]
   defines = [
     "GOOGLE_PROTOBUF_NO_RTTI",
     "GOOGLE_PROTOBUF_NO_STATIC_INITIALIZER",
   ]
+  if (!is_win) {
+    defines += [ "HAVE_PTHREAD" ]
+  }
+}
+
+config("protobuf_warnings") {
+  cflags = []
+  if (is_clang) {
+    # protobuf-3 contains a few functions that are unused.
+    cflags += [ "-Wno-unused-function" ]
+  }
 }
 
 if (is_component_build) {
   config("protobuf_use_dlls") {
     defines = [ "PROTOBUF_USE_DLLS" ]
   }
 }
 
 # This config should be applied to targets using generated code from the proto
 # compiler. It sets up the include directories properly.
 config("using_proto") {
   include_dirs = [
     "src",
     "$root_gen_dir/protoc_out",
   ]
 }
 
 protobuf_lite_sources = [
+  "src/google/protobuf/arena.cc",
+  "src/google/protobuf/arena.h",
+  "src/google/protobuf/arenastring.cc",
+  "src/google/protobuf/arenastring.h",
   "src/google/protobuf/extension_set.cc",
   "src/google/protobuf/extension_set.h",
   "src/google/protobuf/generated_message_util.cc",
   "src/google/protobuf/generated_message_util.h",
   "src/google/protobuf/io/coded_stream.cc",
   "src/google/protobuf/io/coded_stream.h",
   "src/google/protobuf/io/coded_stream_inl.h",
   "src/google/protobuf/io/zero_copy_stream.cc",
   "src/google/protobuf/io/zero_copy_stream.h",
   "src/google/protobuf/io/zero_copy_stream_impl_lite.cc",
   "src/google/protobuf/io/zero_copy_stream_impl_lite.h",
+  "src/google/protobuf/map.h",
+  "src/google/protobuf/map_entry_lite.h",
+  "src/google/protobuf/map_field_lite.h",
+  "src/google/protobuf/map_type_handler.h",
   "src/google/protobuf/message_lite.cc",
   "src/google/protobuf/message_lite.h",
   "src/google/protobuf/repeated_field.cc",
   "src/google/protobuf/repeated_field.h",
   "src/google/protobuf/stubs/atomicops.h",
+  "src/google/protobuf/stubs/atomicops_internals_arm64_gcc.h",
   "src/google/protobuf/stubs/atomicops_internals_arm_gcc.h",
+  "src/google/protobuf/stubs/atomicops_internals_arm_qnx.h",
   "src/google/protobuf/stubs/atomicops_internals_atomicword_compat.h",
+  "src/google/protobuf/stubs/atomicops_internals_generic_gcc.h",
   "src/google/protobuf/stubs/atomicops_internals_macosx.h",
   "src/google/protobuf/stubs/atomicops_internals_mips_gcc.h",
+  "src/google/protobuf/stubs/atomicops_internals_pnacl.h",
+  "src/google/protobuf/stubs/atomicops_internals_power.h",
+  "src/google/protobuf/stubs/atomicops_internals_solaris.h",
+  "src/google/protobuf/stubs/atomicops_internals_tsan.h",
   "src/google/protobuf/stubs/atomicops_internals_x86_gcc.cc",
   "src/google/protobuf/stubs/atomicops_internals_x86_gcc.h",
   "src/google/protobuf/stubs/atomicops_internals_x86_msvc.cc",
   "src/google/protobuf/stubs/atomicops_internals_x86_msvc.h",
+  "src/google/protobuf/stubs/atomic_sequence_num.h",
+  "src/google/protobuf/stubs/bytestream.cc",
+  "src/google/protobuf/stubs/bytestream.h",
+  "src/google/protobuf/stubs/callback.h",
+  "src/google/protobuf/stubs/casts.h",
   "src/google/protobuf/stubs/common.cc",
   "src/google/protobuf/stubs/common.h",
+  "src/google/protobuf/stubs/fastmem.h",
   "src/google/protobuf/stubs/hash.h",
-  "src/google/protobuf/stubs/map-util.h",
+  "src/google/protobuf/stubs/int128.cc",
+  "src/google/protobuf/stubs/int128.h",
+  "src/google/protobuf/stubs/logging.h",
+  "src/google/protobuf/stubs/macros.h",
+  "src/google/protobuf/stubs/map_util.h",
+  "src/google/protobuf/stubs/mutex.h",
   "src/google/protobuf/stubs/once.cc",
   "src/google/protobuf/stubs/once.h",
   "src/google/protobuf/stubs/platform_macros.h",
-  "src/google/protobuf/unknown_field_set.cc",
-  "src/google/protobuf/unknown_field_set.h",
+  "src/google/protobuf/stubs/port.h",
+  "src/google/protobuf/stubs/scoped_ptr.h",
+  "src/google/protobuf/stubs/shared_ptr.h",
+  "src/google/protobuf/stubs/status.cc",
+  "src/google/protobuf/stubs/status.h",
+  "src/google/protobuf/stubs/status_macros.h",
+  "src/google/protobuf/stubs/statusor.cc",
+  "src/google/protobuf/stubs/statusor.h",
+  "src/google/protobuf/stubs/stl_util.h",
+  "src/google/protobuf/stubs/stringpiece.cc",
+  "src/google/protobuf/stubs/stringpiece.h",
+  "src/google/protobuf/stubs/stringprintf.cc",
+  "src/google/protobuf/stubs/stringprintf.h",
+  "src/google/protobuf/stubs/structurally_valid.cc",
+  "src/google/protobuf/stubs/strutil.cc",
+  "src/google/protobuf/stubs/strutil.h",
+  "src/google/protobuf/stubs/template_util.h",
+  "src/google/protobuf/stubs/type_traits.h",
+  "src/google/protobuf/stubs/time.cc",
+  "src/google/protobuf/stubs/time.h",
+  "src/google/protobuf/testing/file.h",
+  "src/google/protobuf/testing/file.cc",
+  "src/google/protobuf/testing/googletest.h",
+  "src/google/protobuf/testing/googletest.cc",
   "src/google/protobuf/wire_format_lite.cc",
   "src/google/protobuf/wire_format_lite.h",
   "src/google/protobuf/wire_format_lite_inl.h",
-  "$config_h_dir/config.h",
 ]
 
 protobuf_lite_cflags = []
 if (is_win) {
   protobuf_lite_cflags = [
-    "/wd4018",  # Signed/unsigned mismatch in comparison.
-    "/wd4244",  # Implicit conversion, possible loss of data.
-    "/wd4355",  # 'this' used in base member initializer list.
-    "/wd4267",  # Size_t to int truncation.
-    "/wd4291",  # No matching operator delete for a placement new.
+    "/wd4018",  # signed/unsigned mismatch in comparison
+    "/wd4065",  # switch statement contains 'default' but no 'case' labels
+    "/wd4146",  # unary minus operator applied to unsigned type
+    "/wd4244",  # implicit conversion, possible loss of data
+    "/wd4267",  # size_t to int truncation
+    "/wd4291",  # no matching operator delete for a placement new.
+    "/wd4305",  # double to float truncation
+    "/wd4355",  # 'this' used in base member initializer list
+    "/wd4506",  # no definition for inline function (protobuf issue #240)
   ]
 }
 
 component("protobuf_lite") {
   sources = protobuf_lite_sources
 
   configs -= [ "//build/config/compiler:chromium_code" ]
-  configs += [ "//build/config/compiler:no_chromium_code" ]
+  configs += [
+    "//build/config/compiler:no_chromium_code",
+
+    # Must be after no_chromium_code for warning flags to be ordered
+    # correctly.
+    ":protobuf_warnings",
+  ]
+
   if (is_win) {
     configs -= [ "//build/config/win:lean_and_mean" ]
   }
+
   public_configs = [
     ":protobuf_config",
 
     # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
     "//build/config/compiler:no_size_t_to_int_warning",
   ]
 
+  deps = [
+    "//build/config/sanitizers:deps",
+  ]
+
   cflags = protobuf_lite_cflags
 
   # Required for component builds. See http://crbug.com/172800.
   if (is_component_build) {
     public_configs += [ ":protobuf_use_dlls" ]
     defines = [ "LIBPROTOBUF_EXPORTS" ]
   }
 }
 
 # This is the full, heavy protobuf lib that's needed for c++ .protos that don't
 # specify the LITE_RUNTIME option. The protocol compiler itself (protoc) falls
 # into that category. Do not use in Chrome code.
-
 source_set("protobuf_full") {
   # Prevent people from depending on this outside our file.
   visibility = [ ":*" ]
 
   sources = protobuf_lite_sources
   sources += [
-    "src/google/protobuf/compiler/code_generator.h",
-    "src/google/protobuf/compiler/command_line_interface.h",
+    "src/google/protobuf/any.cc",
+    "src/google/protobuf/any.h",
+    "src/google/protobuf/any.pb.cc",
+    "src/google/protobuf/any.pb.h",
+    "src/google/protobuf/api.pb.cc",
+    "src/google/protobuf/api.pb.h",
+    "src/google/protobuf/compiler/importer.cc",
     "src/google/protobuf/compiler/importer.h",
-    "src/google/protobuf/compiler/java/java_doc_comment.cc",
-    "src/google/protobuf/compiler/java/java_doc_comment.h",
+    "src/google/protobuf/compiler/parser.cc",
     "src/google/protobuf/compiler/parser.h",
     "src/google/protobuf/descriptor.cc",
     "src/google/protobuf/descriptor.h",
     "src/google/protobuf/descriptor.pb.cc",
     "src/google/protobuf/descriptor.pb.h",
     "src/google/protobuf/descriptor_database.cc",
     "src/google/protobuf/descriptor_database.h",
+    "src/google/protobuf/duration.pb.cc",
+    "src/google/protobuf/duration.pb.h",
     "src/google/protobuf/dynamic_message.cc",
     "src/google/protobuf/dynamic_message.h",
+    "src/google/protobuf/empty.pb.cc",
+    "src/google/protobuf/empty.pb.h",
     "src/google/protobuf/extension_set_heavy.cc",
+    "src/google/protobuf/field_mask.pb.cc",
+    "src/google/protobuf/field_mask.pb.h",
     "src/google/protobuf/generated_enum_reflection.h",
+    "src/google/protobuf/generated_enum_util.h",
     "src/google/protobuf/generated_message_reflection.cc",
     "src/google/protobuf/generated_message_reflection.h",
-    "src/google/protobuf/io/gzip_stream.h",
+
+    # gzip_stream.cc pulls in zlib, but it's not actually used by protoc, just
+    # by test code, so instead of compiling zlib for the host, let's just
+    # exclude this.
+    # "src/google/protobuf/io/gzip_stream.cc",
+    # "src/google/protobuf/io/gzip_stream.h",
+
+    "src/google/protobuf/io/printer.cc",
     "src/google/protobuf/io/printer.h",
+    "src/google/protobuf/io/strtod.cc",
+    "src/google/protobuf/io/strtod.h",
+    "src/google/protobuf/io/tokenizer.cc",
     "src/google/protobuf/io/tokenizer.h",
+    "src/google/protobuf/io/zero_copy_stream_impl.cc",
     "src/google/protobuf/io/zero_copy_stream_impl.h",
+    "src/google/protobuf/map_entry.h",
+    "src/google/protobuf/map_field.cc",
+    "src/google/protobuf/map_field.h",
+    "src/google/protobuf/map_field_inl.h",
     "src/google/protobuf/message.cc",
     "src/google/protobuf/message.h",
+    "src/google/protobuf/metadata.h",
+    "src/google/protobuf/reflection.h",
+    "src/google/protobuf/reflection_internal.h",
     "src/google/protobuf/reflection_ops.cc",
     "src/google/protobuf/reflection_ops.h",
     "src/google/protobuf/service.cc",
     "src/google/protobuf/service.h",
-    "src/google/protobuf/stubs/stl_util.h",
-    "src/google/protobuf/stubs/stringprintf.cc",
-    "src/google/protobuf/stubs/stringprintf.h",
-    "src/google/protobuf/stubs/structurally_valid.cc",
-    "src/google/protobuf/stubs/strutil.cc",
-    "src/google/protobuf/stubs/strutil.h",
+    "src/google/protobuf/source_context.pb.cc",
+    "src/google/protobuf/source_context.pb.h",
+    "src/google/protobuf/struct.pb.cc",
+    "src/google/protobuf/struct.pb.h",
+    "src/google/protobuf/stubs/mathlimits.cc",
+    "src/google/protobuf/stubs/mathlimits.h",
+    "src/google/protobuf/stubs/mathutil.h",
+    "src/google/protobuf/stubs/singleton.h",
     "src/google/protobuf/stubs/substitute.cc",
     "src/google/protobuf/stubs/substitute.h",
-    "src/google/protobuf/stubs/template_util.h",
-    "src/google/protobuf/stubs/type_traits.h",
     "src/google/protobuf/text_format.cc",
     "src/google/protobuf/text_format.h",
+    "src/google/protobuf/timestamp.pb.cc",
+    "src/google/protobuf/timestamp.pb.h",
+    "src/google/protobuf/type.pb.cc",
+    "src/google/protobuf/type.pb.h",
+    "src/google/protobuf/unknown_field_set.cc",
+    "src/google/protobuf/unknown_field_set.h",
+    "src/google/protobuf/util/field_comparator.cc",
+    "src/google/protobuf/util/field_comparator.h",
+    "src/google/protobuf/util/field_mask_util.cc",
+    "src/google/protobuf/util/field_mask_util.h",
+    "src/google/protobuf/util/internal/constants.h",
+    "src/google/protobuf/util/internal/datapiece.cc",
+    "src/google/protobuf/util/internal/datapiece.h",
+    "src/google/protobuf/util/internal/default_value_objectwriter.cc",
+    "src/google/protobuf/util/internal/default_value_objectwriter.h",
+    "src/google/protobuf/util/internal/error_listener.cc",
+    "src/google/protobuf/util/internal/error_listener.h",
+    "src/google/protobuf/util/internal/field_mask_utility.cc",
+    "src/google/protobuf/util/internal/field_mask_utility.h",
+    "src/google/protobuf/util/internal/json_escaping.cc",
+    "src/google/protobuf/util/internal/json_escaping.h",
+    "src/google/protobuf/util/internal/json_objectwriter.cc",
+    "src/google/protobuf/util/internal/json_objectwriter.h",
+    "src/google/protobuf/util/internal/json_stream_parser.cc",
+    "src/google/protobuf/util/internal/json_stream_parser.h",
+    "src/google/protobuf/util/internal/location_tracker.h",
+    "src/google/protobuf/util/internal/object_location_tracker.h",
+    "src/google/protobuf/util/internal/object_source.h",
+    "src/google/protobuf/util/internal/object_writer.cc",
+    "src/google/protobuf/util/internal/object_writer.h",
+    "src/google/protobuf/util/internal/proto_writer.cc",
+    "src/google/protobuf/util/internal/proto_writer.h",
+    "src/google/protobuf/util/internal/protostream_objectsource.cc",
+    "src/google/protobuf/util/internal/protostream_objectsource.h",
+    "src/google/protobuf/util/internal/protostream_objectwriter.cc",
+    "src/google/protobuf/util/internal/protostream_objectwriter.h",
+    "src/google/protobuf/util/internal/structured_object_writer.h",
+    "src/google/protobuf/util/internal/type_info.cc",
+    "src/google/protobuf/util/internal/type_info.h",
+    "src/google/protobuf/util/internal/type_info_test_helper.cc",
+    "src/google/protobuf/util/internal/type_info_test_helper.h",
+    "src/google/protobuf/util/internal/utility.cc",
+    "src/google/protobuf/util/internal/utility.h",
+    "src/google/protobuf/util/json_util.cc",
+    "src/google/protobuf/util/json_util.h",
+    "src/google/protobuf/util/message_differencer.cc",
+    "src/google/protobuf/util/message_differencer.h",
+    "src/google/protobuf/util/time_util.cc",
+    "src/google/protobuf/util/time_util.h",
+    "src/google/protobuf/util/type_resolver.h",
+    "src/google/protobuf/util/type_resolver_util.cc",
+    "src/google/protobuf/util/type_resolver_util.h",
     "src/google/protobuf/wire_format.cc",
     "src/google/protobuf/wire_format.h",
-
-    # This file pulls in zlib, but it's not actually used by protoc, so
-    # instead of compiling zlib for the host, let's just exclude this.
-    # "src/src/google/protobuf/io/gzip_stream.cc",
-    "src/google/protobuf/compiler/importer.cc",
-    "src/google/protobuf/compiler/parser.cc",
-    "src/google/protobuf/io/printer.cc",
-    "src/google/protobuf/io/tokenizer.cc",
-    "src/google/protobuf/io/zero_copy_stream_impl.cc",
+    "src/google/protobuf/wrappers.pb.cc",
+    "src/google/protobuf/wrappers.pb.h",
   ]
 
   configs -= [ "//build/config/compiler:chromium_code" ]
-  configs += [ "//build/config/compiler:no_chromium_code" ]
+  configs += [
+    "//build/config/compiler:no_chromium_code",
+
+    # Must be after no_chromium_code for warning flags to be ordered
+    # correctly.
+    ":protobuf_warnings",
+  ]
   if (is_win) {
     configs -= [ "//build/config/win:lean_and_mean" ]
   }
   public_configs = [
     ":protobuf_config",
 
     # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
     "//build/config/compiler:no_size_t_to_int_warning",
   ]
 
   cflags = protobuf_lite_cflags
 }
 
 # Only compile the compiler for the host architecture.
 if (current_toolchain == host_toolchain) {
   executable("protoc") {
     sources = [
       "src/google/protobuf/compiler/code_generator.cc",
+      "src/google/protobuf/compiler/code_generator.h",
       "src/google/protobuf/compiler/command_line_interface.cc",
+      "src/google/protobuf/compiler/command_line_interface.h",
       "src/google/protobuf/compiler/cpp/cpp_enum.cc",
       "src/google/protobuf/compiler/cpp/cpp_enum.h",
       "src/google/protobuf/compiler/cpp/cpp_enum_field.cc",
       "src/google/protobuf/compiler/cpp/cpp_enum_field.h",
       "src/google/protobuf/compiler/cpp/cpp_extension.cc",
       "src/google/protobuf/compiler/cpp/cpp_extension.h",
       "src/google/protobuf/compiler/cpp/cpp_field.cc",
       "src/google/protobuf/compiler/cpp/cpp_field.h",
       "src/google/protobuf/compiler/cpp/cpp_file.cc",
       "src/google/protobuf/compiler/cpp/cpp_file.h",
       "src/google/protobuf/compiler/cpp/cpp_generator.cc",
+      "src/google/protobuf/compiler/cpp/cpp_generator.h",
       "src/google/protobuf/compiler/cpp/cpp_helpers.cc",
       "src/google/protobuf/compiler/cpp/cpp_helpers.h",
+      "src/google/protobuf/compiler/cpp/cpp_map_field.cc",
+      "src/google/protobuf/compiler/cpp/cpp_map_field.h",
       "src/google/protobuf/compiler/cpp/cpp_message.cc",
       "src/google/protobuf/compiler/cpp/cpp_message.h",
       "src/google/protobuf/compiler/cpp/cpp_message_field.cc",
       "src/google/protobuf/compiler/cpp/cpp_message_field.h",
+      "src/google/protobuf/compiler/cpp/cpp_options.h",
       "src/google/protobuf/compiler/cpp/cpp_primitive_field.cc",
       "src/google/protobuf/compiler/cpp/cpp_primitive_field.h",
       "src/google/protobuf/compiler/cpp/cpp_service.cc",
       "src/google/protobuf/compiler/cpp/cpp_service.h",
       "src/google/protobuf/compiler/cpp/cpp_string_field.cc",
       "src/google/protobuf/compiler/cpp/cpp_string_field.h",
-      "src/google/protobuf/compiler/java/java_enum.cc",
-      "src/google/protobuf/compiler/java/java_enum.h",
-      "src/google/protobuf/compiler/java/java_enum_field.cc",
-      "src/google/protobuf/compiler/java/java_enum_field.h",
-      "src/google/protobuf/compiler/java/java_extension.cc",
-      "src/google/protobuf/compiler/java/java_extension.h",
-      "src/google/protobuf/compiler/java/java_field.cc",
-      "src/google/protobuf/compiler/java/java_field.h",
-      "src/google/protobuf/compiler/java/java_file.cc",
-      "src/google/protobuf/compiler/java/java_file.h",
-      "src/google/protobuf/compiler/java/java_generator.cc",
-      "src/google/protobuf/compiler/java/java_helpers.cc",
-      "src/google/protobuf/compiler/java/java_helpers.h",
-      "src/google/protobuf/compiler/java/java_message.cc",
-      "src/google/protobuf/compiler/java/java_message.h",
-      "src/google/protobuf/compiler/java/java_message_field.cc",
-      "src/google/protobuf/compiler/java/java_message_field.h",
-      "src/google/protobuf/compiler/java/java_primitive_field.cc",
-      "src/google/protobuf/compiler/java/java_primitive_field.h",
-      "src/google/protobuf/compiler/java/java_service.cc",
-      "src/google/protobuf/compiler/java/java_service.h",
-      "src/google/protobuf/compiler/java/java_string_field.cc",
-      "src/google/protobuf/compiler/java/java_string_field.h",
       "src/google/protobuf/compiler/main.cc",
       "src/google/protobuf/compiler/plugin.cc",
+      "src/google/protobuf/compiler/plugin.h",
       "src/google/protobuf/compiler/plugin.pb.cc",
+      "src/google/protobuf/compiler/plugin.pb.h",
       "src/google/protobuf/compiler/python/python_generator.cc",
+      "src/google/protobuf/compiler/python/python_generator.h",
       "src/google/protobuf/compiler/subprocess.cc",
       "src/google/protobuf/compiler/subprocess.h",
       "src/google/protobuf/compiler/zip_writer.cc",
       "src/google/protobuf/compiler/zip_writer.h",
     ]
 
     configs -= [ "//build/config/compiler:chromium_code" ]
-    configs += [ "//build/config/compiler:no_chromium_code" ]
+    configs += [
+      "//build/config/compiler:no_chromium_code",
+
+      # Must be after no_chromium_code for warning flags to be ordered
+      # correctly.
+      ":protobuf_warnings",
+    ]
     if (is_win) {
       # This is defined internally, don't warn on duplicate.
       configs -= [ "//build/config/win:lean_and_mean" ]
     }
 
     cflags = protobuf_lite_cflags
 
     deps = [
       ":protobuf_full",
       "//build/config/sanitizers:deps",
     ]
     deps += [ "//build/config/sanitizers:deps" ]
   }
 }
 
 google_python_dir = "$root_out_dir/pyproto/google"
 
 copy("copy_google") {
   sources = [
     "__init__.py",
   ]
   outputs = [
     "$google_python_dir/{{source_file_part}}",
   ]
 }
 
+copy("copy_six") {
+  sources = [
+    "third_party/six/six.py",
+  ]
+  outputs = [
+    "$google_python_dir/third_party/six/{{source_file_part}}",
+  ]
+}
+
 copy("copy_google_protobuf") {
   sources = [
     "python/google/protobuf/__init__.py",
     "python/google/protobuf/descriptor.py",
     "python/google/protobuf/descriptor_database.py",
     "python/google/protobuf/descriptor_pool.py",
+    "python/google/protobuf/json_format.py",
     "python/google/protobuf/message.py",
     "python/google/protobuf/message_factory.py",
+    "python/google/protobuf/proto_builder.py",
     "python/google/protobuf/reflection.py",
     "python/google/protobuf/service.py",
     "python/google/protobuf/service_reflection.py",
+    "python/google/protobuf/symbol_database.py",
+    "python/google/protobuf/text_encoding.py",
     "python/google/protobuf/text_format.py",
 
-    # TODO(ncarter): protoc"s python generator treats
-    # descriptor.proto specially, but it's not possible to trigger
-    # the special treatment unless you run protoc from ./src/src
-    # (the treatment is based on the path to the .proto file
-    # matching a constant exactly). I'm not sure how to convince
-    # gyp to execute a rule from a different directory.  Until this
-    # is resolved, use a copy of descriptor_pb2.py that I manually
-    # generated.
-    "descriptor_pb2.py",
+    # TODO(ncarter): protoc's python generator treats descriptor.proto
+    # specially, but only when the input path is exactly
+    # "google/protobuf/descriptor.proto".  I'm not sure how to execute a rule
+    # from a different directory.  For now, use a manually-generated copy of
+    # descriptor_pb2.py.
+    "python/google/protobuf/descriptor_pb2.py",
   ]
   outputs = [
     "$google_python_dir/protobuf/{{source_file_part}}",
   ]
 }
 
 copy("copy_google_protobuf_internal") {
   sources = [
     "python/google/protobuf/internal/__init__.py",
+    "python/google/protobuf/internal/_parameterized.py",
     "python/google/protobuf/internal/api_implementation.py",
     "python/google/protobuf/internal/containers.py",
-    "python/google/protobuf/internal/cpp_message.py",
     "python/google/protobuf/internal/decoder.py",
     "python/google/protobuf/internal/encoder.py",
     "python/google/protobuf/internal/enum_type_wrapper.py",
-    "python/google/protobuf/internal/generator_test.py",
     "python/google/protobuf/internal/message_listener.py",
     "python/google/protobuf/internal/python_message.py",
     "python/google/protobuf/internal/type_checkers.py",
+    "python/google/protobuf/internal/well_known_types.py",
     "python/google/protobuf/internal/wire_format.py",
   ]
   outputs = [
     "$google_python_dir/protobuf/internal/{{source_file_part}}",
   ]
 }
 
 group("py_proto") {
   public_deps = [
     ":copy_google",
     ":copy_google_protobuf",
     ":copy_google_protobuf_internal",
+    ":copy_six",
   ]
 
   # Targets that depend on this should depend on the copied data files.
   data = get_target_outputs(":copy_google")
+  data += get_target_outputs(":copy_six")
   data += get_target_outputs(":copy_google_protobuf")
   data += get_target_outputs(":copy_google_protobuf_internal")
 }