[Bindings] Create and use V8 context snapshots

third_party/WebKit/Source/modules/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.
 
 import("//build/split_static_library.gni")
 import("//build/config/chromecast_build.gni")
 import("//third_party/WebKit/Source/bindings/bindings.gni")
 import("//third_party/WebKit/Source/bindings/modules/v8/generated.gni")
 import("//third_party/WebKit/Source/bindings/modules/v8/v8.gni")
 import("//third_party/WebKit/Source/build/scripts/scripts.gni")
@@ skipping 48 matching lines @@
     "EventTargetModules.h",
     "ModulesExport.h",
     "ModulesInitializer.cpp",
     "ModulesInitializer.h",
   ]
 
   # Compile sources generated by module_names script.
   sources += get_target_outputs(":module_names")
 
   sources += bindings_modules_v8_files
+  sources += rebase_path(
+          [ bindings_generated_v8_context_snapshot_external_references_file ],
+          ".",
+          "//")
 
   configs += [
     ":modules_implementation",
 
     # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
     "//build/config/compiler:no_size_t_to_int_warning",
     "//third_party/WebKit/Source:config",
     "//third_party/WebKit/Source:non_test_config",
     "//third_party/WebKit/Source:inside_blink",
     "//third_party/WebKit/Source/core:blink_core_pch",
@@ skipping 249 matching lines @@
     ":modules",
     ":modules_testing",
     "//skia",
     "//testing/gmock",
     "//testing/gtest",
     "//third_party/WebKit/Source/core",
     "//third_party/WebKit/Source/platform/wtf",
     "//v8",
   ]
 }