Support browser side thumbnailing for GPU composited pages on Windows.

content/content_browser.gypi

 # Copyright (c) 2012 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.
 
 {
   'dependencies': [
     'browser/debugger/devtools_resources.gyp:devtools_resources',
     '../base/base.gyp:base_static',
     '../crypto/crypto.gyp:crypto',
     '../net/net.gyp:http_server',
@@ skipping 322 matching lines @@
     'browser/geolocation/win7_location_provider_win.cc',
     'browser/geolocation/win7_location_provider_win.h',
     'browser/gpu/browser_gpu_channel_host_factory.cc',
     'browser/gpu/browser_gpu_channel_host_factory.h',
     'browser/gpu/gpu_data_manager_impl.cc',
     'browser/gpu/gpu_data_manager_impl.h',
     'browser/gpu/gpu_process_host.cc',
     'browser/gpu/gpu_process_host.h',
     'browser/gpu/gpu_process_host_ui_shim.cc',
     'browser/gpu/gpu_process_host_ui_shim.h',
+    'browser/gpu/gpu_surface_reader_win.cc',
+    'browser/gpu/gpu_surface_reader_win.h',
     'browser/gpu/gpu_surface_tracker.cc',
     'browser/gpu/gpu_surface_tracker.h',
     'browser/host_zoom_map_impl.cc',
     'browser/host_zoom_map_impl.h',
     'browser/in_process_webkit/browser_webkitplatformsupport_impl.cc',
     'browser/in_process_webkit/browser_webkitplatformsupport_impl.h',
     'browser/in_process_webkit/dom_storage_area.cc',
     'browser/in_process_webkit/dom_storage_area.h',
     'browser/in_process_webkit/dom_storage_context_impl.cc',
     'browser/in_process_webkit/dom_storage_context_impl.h',
@@ skipping 530 matching lines @@
       ],
     }],
     ['input_speech==0', {
       'sources/': [
         ['exclude', '^browser/speech/'],
       ],
     }],
   ],
 }