gpu: Move GpuWatchdogThread into //gpu/ipc/service from content.

gpu/ipc/service/BUILD.gn

 # Copyright 2016 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("//testing/test.gni")
 import("//build/config/ui.gni")
 if (is_mac) {
   import("//build/config/mac/mac_sdk.gni")
 }
 
@@ skipping 25 matching lines @@
     "gpu_command_buffer_stub.cc",
     "gpu_command_buffer_stub.h",
     "gpu_config.h",
     "gpu_memory_buffer_factory.cc",
     "gpu_memory_buffer_factory.h",
     "gpu_memory_manager.cc",
     "gpu_memory_manager.h",
     "gpu_memory_tracking.cc",
     "gpu_memory_tracking.h",
     "gpu_watchdog.h",
+    "gpu_watchdog_thread.cc",
+    "gpu_watchdog_thread.h",
     "image_transport_surface.h",
     "pass_through_image_transport_surface.cc",
     "pass_through_image_transport_surface.h",
   ]
   configs += [ "//gpu:gpu_implementation" ]
   public_deps = [
     "//base",
     "//ipc",
     "//ui/base",
     "//ui/events:events_base",
@@ skipping 109 matching lines @@
     deps += [ "//ui/android:ui_java" ]
   }
   if (is_mac) {
     sources += [ "gpu_memory_buffer_factory_io_surface_unittest.cc" ]
   }
   if (use_ozone) {
     sources += [ "gpu_memory_buffer_factory_ozone_native_pixmap_unittest.cc" ]
     deps += [ "//ui/ozone" ]
   }
 }