cc: Route offscreen context creation for compositor to the browser.

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',
     '../build/temp_gyp/googleurl.gyp:googleurl',
     '../components/components_tracing.gyp:tracing',
     '../media/media.gyp:media',
@@ skipping 194 matching lines @@
     'common/gamepad_user_gesture.h',
     'common/geolocation_messages.h',
     'common/gpu/client/command_buffer_proxy_impl.cc',
     'common/gpu/client/command_buffer_proxy_impl.h',
     'common/gpu/client/gl_helper.cc',
     'common/gpu/client/gl_helper.h',
     'common/gpu/client/gpu_channel_host.cc',
     'common/gpu/client/gpu_channel_host.h',
     'common/gpu/client/gpu_video_decode_accelerator_host.cc',
     'common/gpu/client/gpu_video_decode_accelerator_host.h',
+    'common/gpu/client/offscreen_context.cc',
+    'common/gpu/client/offscreen_context.h',
     'common/gpu/client/webgraphicscontext3d_command_buffer_impl.cc',
     'common/gpu/client/webgraphicscontext3d_command_buffer_impl.h',
     'common/gpu/gl_scoped_binders.cc',
     'common/gpu/gl_scoped_binders.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',
@@ skipping 350 matching lines @@
         '..\\third_party\\directxsdk\\files\\Redist\\<(input)',
         '<(output)',
         '<(PRODUCT_DIR)',
         ],
         'msvs_cygwin_shell': 1,
       },
      ]
     }],
   ],
 }