Add a proxy for thread-hopping VideoCapture::EventHandler.

media/media.gyp

 # Copyright (c) 2011 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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'targets': [
     {
@@ skipping 168 matching lines @@
         'filters/null_video_renderer.cc',
         'filters/null_video_renderer.h',
         'filters/video_renderer_base.cc',
         'filters/video_renderer_base.h',
         'video/capture/fake_video_capture_device.cc',
         'video/capture/fake_video_capture_device.h',
         'video/capture/linux/video_capture_device_linux.cc',
         'video/capture/linux/video_capture_device_linux.h',
         'video/capture/video_capture.h',
         'video/capture/video_capture_device.h',
+        'video/capture/video_capture_proxy.cc',
+        'video/capture/video_capture_proxy.h',
         'video/capture/win/filter_base_win.cc',
         'video/capture/win/filter_base_win.h',
         'video/capture/win/pin_base_win.cc',
         'video/capture/win/pin_base_win.h',
         'video/capture/win/sink_filter_observer_win.h',
         'video/capture/win/sink_filter_win.cc',
         'video/capture/win/sink_filter_win.h',        
         'video/capture/win/sink_input_pin_win.cc',
         'video/capture/win/sink_input_pin_win.h',
         'video/capture/win/video_capture_device_win.cc',
@@ skipping 501 matching lines @@
             'tools/player_x11/gl_video_renderer.h',
             'tools/player_x11/player_x11.cc',
             'tools/player_x11/x11_video_renderer.cc',
             'tools/player_x11/x11_video_renderer.h',
           ],
         },
       ],
     }],
   ],
 }