Implement GpuArcVideoService for arc video accelerator

content/browser/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/config/features.gni")
 import("//build/config/ui.gni")
 import("//content/browser/browser.gni")
 import("//media/media_options.gni")
 
 source_set("browser") {
@@ skipping 398 matching lines @@
       "//ui/accelerated_widget_mac",
     ]
     libs += [
       "bsm",
       "QTKit.framework",
     ]
   }
 
   if (is_chromeos) {
     sources -= [ "device_sensors/data_fetcher_shared_memory_default.cc" ]
+    sources += [
+      "gpu/gpu_arc_video_service_host.cc",
+      "gpu/gpu_arc_video_service_host.h",
+    ]
     deps += [
       "//chromeos",
       "//chromeos:power_manager_proto",
     ]
   }
 
   if (use_aura) {
     deps += [
       "//components/bitmap_uploader",
       "//components/mus/public/cpp",
@@ skipping 118 matching lines @@
 
   if (enable_webvr && is_android) {
     sources += [
       "vr/android/cardboard/cardboard_vr_device.cc",
       "vr/android/cardboard/cardboard_vr_device.h",
       "vr/android/cardboard/cardboard_vr_device_provider.cc",
       "vr/android/cardboard/cardboard_vr_device_provider.h",
     ]
   }
 }