Create child window in GPU process for DirectComposition

content/content_common.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': [
     '../base/base.gyp:base',
     '../components/tracing.gyp:tracing',
     '../gpu/command_buffer/command_buffer.gyp:gles2_utils',
     '../net/net.gyp:net',
@@ skipping 300 matching lines @@
       'common/gpu/client/gpu_memory_buffer_impl_shared_memory.cc',
       'common/gpu/client/gpu_memory_buffer_impl_shared_memory.h',
       'common/gpu/client/gpu_video_decode_accelerator_host.cc',
       'common/gpu/client/gpu_video_decode_accelerator_host.h',
       'common/gpu/client/gpu_video_encode_accelerator_host.cc',
       'common/gpu/client/gpu_video_encode_accelerator_host.h',
       'common/gpu/client/grcontext_for_webgraphicscontext3d.cc',
       'common/gpu/client/grcontext_for_webgraphicscontext3d.h',
       'common/gpu/client/webgraphicscontext3d_command_buffer_impl.cc',
       'common/gpu/client/webgraphicscontext3d_command_buffer_impl.h',
+      'common/gpu/child_window_surface_win.cc',
+      'common/gpu/child_window_surface_win.h',
       'common/gpu/gpu_channel.cc',
       'common/gpu/gpu_channel.h',
       'common/gpu/gpu_channel_manager.cc',
       'common/gpu/gpu_channel_manager.h',
       'common/gpu/gpu_command_buffer_stub.cc',
       'common/gpu/gpu_command_buffer_stub.h',
       'common/gpu/gpu_config.h',
       'common/gpu/gpu_memory_buffer_factory.cc',
       'common/gpu/gpu_memory_buffer_factory.h',
       'common/gpu/gpu_memory_buffer_factory_ozone_native_pixmap.cc',
@@ skipping 775 matching lines @@
         'common/gpu/client/gpu_memory_buffer_impl_ozone.cc',
         'common/gpu/client/gpu_memory_buffer_impl_ozone_native_pixmap.cc',
         'common/gpu/client/gpu_memory_buffer_impl_ozone_native_pixmap.h',
         'common/gpu/gpu_memory_buffer_factory_ozone.cc',
         'common/gpu/gpu_memory_buffer_factory_ozone_native_pixmap.cc',
         'common/gpu/gpu_memory_buffer_factory_ozone_native_pixmap.h',
       ],
     }],
   ],
 }