Add srcObject attribute of type MediaStream to HTMLMediaElement.

content/content_renderer.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',
     '../base/third_party/dynamic_annotations/dynamic_annotations.gyp:dynamic_annotations',
     '../cc/cc.gyp:cc',
     '../cc/cc.gyp:cc_proto',
@@ skipping 333 matching lines @@
       'renderer/media/renderer_webmidiaccessor_impl.cc',
       'renderer/media/renderer_webmidiaccessor_impl.h',
       'renderer/media/track_audio_renderer.cc',
       'renderer/media/track_audio_renderer.h',
       'renderer/media/video_capture_impl.cc',
       'renderer/media/video_capture_impl.h',
       'renderer/media/video_capture_impl_manager.cc',
       'renderer/media/video_capture_impl_manager.h',
       'renderer/media/video_capture_message_filter.cc',
       'renderer/media/video_capture_message_filter.h',
+      'renderer/media/web_media_element_source_utils.cc',
+      'renderer/media/web_media_element_source_utils.h',
       'renderer/media/webmediaplayer_ms.cc',
       'renderer/media/webmediaplayer_ms.h',
       'renderer/media/webmediaplayer_ms_compositor.cc',
       'renderer/media/webmediaplayer_ms_compositor.h',
       'renderer/menu_item_builder.cc',
       'renderer/menu_item_builder.h',
       'renderer/mojo/service_registry_js_wrapper.cc',
       'renderer/mojo/service_registry_js_wrapper.h',
       'renderer/mojo_bindings_controller.cc',
       'renderer/mojo_bindings_controller.h',
@@ skipping 558 matching lines @@
     }],
   ],
   'target_conditions': [
     ['OS=="android"', {
       'sources/': [
         ['include', '^renderer/render_view_linux\\.cc$'],
       ],
     }],
   ],
 }