Update from https://crrev.com/307330

skia/BUILD.gn

 # Copyright (c) 2013 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/config/features.gni")
 import("//build/config/ui.gni")
 if (cpu_arch == "arm") {
   import("//build/config/arm.gni")
 }
 
@@ skipping 264 matching lines @@
     "ext/bitmap_platform_device.h",
     "ext/convolver.cc",
     "ext/convolver.h",
     "ext/event_tracer_impl.cc",
     "ext/event_tracer_impl.h",
     "ext/fontmgr_default_win.cc",
     "ext/fontmgr_default_win.h",
     "ext/google_logging.cc",
     "ext/image_operations.cc",
     "ext/image_operations.h",
-    "ext/lazy_pixel_ref.cc",
-    "ext/lazy_pixel_ref.h",
-    "ext/SkThread_chrome.cc",
     "ext/opacity_draw_filter.cc",
     "ext/opacity_draw_filter.h",
     "ext/pixel_ref_utils.cc",
     "ext/pixel_ref_utils.h",
     "ext/platform_canvas.cc",
     "ext/platform_canvas.h",
     "ext/platform_device.cc",
     "ext/platform_device.h",
     "ext/platform_device_linux.cc",
     "ext/platform_device_mac.cc",
@@ skipping 113 matching lines @@
       "//third_party/skia/include/utils/win/SkAutoCoInitialize.h",
       "//third_party/skia/include/utils/win/SkHRESULT.h",
       "//third_party/skia/include/utils/win/SkIStream.h",
       "//third_party/skia/include/utils/win/SkTScopedComPtr.h",
       "//third_party/skia/src/utils/win/SkAutoCoInitialize.cpp",
       "//third_party/skia/src/utils/win/SkIStream.cpp",
       "//third_party/skia/src/utils/win/SkWGL_win.cpp",
     ]
   }
 
-  # Fixup Chrome sources.
-  if (is_posix) {
-    sources -= [ "ext/SkThread_chrome.cc" ]
-  }
-  if (is_win) {
-    sources -= [ "ext/SkThread_chrome.cc" ]
-  }
   if (is_android && (!enable_basic_printing && !enable_print_preview)) {
     sources -= [ "ext/skia_utils_base.cc" ]
   }
 
   # Fixup skia library sources.
   if (is_win) {
     sources -= [
       "//third_party/skia/src/ports/SkOSFile_posix.cpp",
       "//third_party/skia/src/ports/SkTime_Unix.cpp",
       "//third_party/skia/src/ports/SkTLS_pthread.cpp",
@@ skipping 261 matching lines @@
     ":skia_library_config",
     "//build/config/compiler:no_chromium_code",
   ]
 
   deps = [
     "//base",
   ]
 
   visibility = [ ":skia" ]
 }