Eliminate video capture thread in renderer

content/renderer/render_thread_impl.h

 // 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.
 
 #ifndef CONTENT_RENDERER_RENDER_THREAD_IMPL_H_
 #define CONTENT_RENDERER_RENDER_THREAD_IMPL_H_
 
 #include <set>
 #include <string>
 #include <vector>
@@ skipping 415 matching lines @@
 
   scoped_ptr<MediaStreamDependencyFactory> media_stream_factory_;
 
   // This is used to communicate to the browser process the status
   // of all the peer connections created in the renderer.
   scoped_ptr<PeerConnectionTracker> peer_connection_tracker_;
 
   // Dispatches all P2P sockets.
   scoped_refptr<P2PSocketDispatcher> p2p_socket_dispatcher_;
 
-  // Used on multiple threads.
-  scoped_refptr<VideoCaptureImplManager> vc_manager_;
+  // Used on the render thread.
+  scoped_ptr<VideoCaptureImplManager> vc_manager_;
 
   // The count of RenderWidgets running through this thread.
   int widget_count_;
 
   // The count of hidden RenderWidgets running through this thread.
   int hidden_widget_count_;
 
   // The current value of the idle notification timer delay.
   int64 idle_notification_delay_in_ms_;
 
@@ skipping 59 matching lines @@
   // multiple threads. Current allocation mechanism for IOSurface
   // backed GpuMemoryBuffers prevent this. crbug.com/325045
   base::ThreadChecker allocate_gpu_memory_buffer_thread_checker_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderThreadImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_THREAD_IMPL_H_