Enable precompiled headers for Blink on Windows.

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 63 matching lines @@
                   "//")
 
   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",
   ]
 
   deps = [
     ":make_modules_generated",
     ":module_names",
     "//device/geolocation/public/interfaces:interfaces_blink",
     "//third_party/WebKit/Source/bindings/modules:generated",
     "//third_party/WebKit/Source/core",
     "//third_party/WebKit/Source/modules/accessibility",
     "//third_party/WebKit/Source/modules/app_banner",
@@ skipping 97 matching lines @@
     "speech/testing/PlatformSpeechSynthesizerMock.h",
     "vibration/testing/InternalsVibration.cpp",
     "vibration/testing/InternalsVibration.h",
     "webaudio/testing/InternalsWebAudio.cpp",
     "webaudio/testing/InternalsWebAudio.h",
   ]
 
   configs += [
     "//third_party/WebKit/Source:config",
     "//third_party/WebKit/Source:inside_blink",
+    "//third_party/WebKit/Source/core:blink_core_pch",
   ]
 
   deps = [
     "//third_party/WebKit/Source/core",
     "//third_party/WebKit/Source/modules",
   ]
 }
 
 group("make_modules_generated") {
   public_deps = [
@@ skipping 69 matching lines @@
     "webaudio/ScriptProcessorNodeTest.cpp",
     "webaudio/StereoPannerNodeTest.cpp",
     "webdatabase/QuotaTrackerTest.cpp",
     "websockets/DOMWebSocketTest.cpp",
     "websockets/DocumentWebSocketChannelTest.cpp",
   ]
 
   configs += [
     "//third_party/WebKit/Source:config",
     "//third_party/WebKit/Source:inside_blink",
+    "//third_party/WebKit/Source/core:blink_core_pch",
   ]
 
   deps = [
     ":modules",
     ":modules_testing",
     "//components/payments:payment_request_blink",
     "//skia",
     "//testing/gmock",
     "//testing/gtest",
     "//third_party/WebKit/Source/core",
     "//third_party/WebKit/Source/wtf",
     "//v8",
   ]
 }