Change media MessageLoopProxy usage to SingleThreadTaskRunners.

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 279 matching lines @@
 
   // Get the GPU channel. Returns NULL if the channel is not established or
   // has been lost.
   GpuChannelHost* GetGpuChannel();
 
   // Returns a MessageLoopProxy instance corresponding to the message loop
   // of the thread on which file operations should be run. Must be called
   // on the renderer's main thread.
   scoped_refptr<base::MessageLoopProxy> GetFileThreadMessageLoopProxy();
 
-  // Returns a MessageLoopProxy instance corresponding to the message loop
+  // Returns a SingleThreadTaskRunner instance corresponding to the message loop
   // of the thread on which media operations should be run. Must be called
   // on the renderer's main thread.
-  scoped_refptr<base::MessageLoopProxy> GetMediaThreadMessageLoopProxy();
+  scoped_refptr<base::SingleThreadTaskRunner> GetMediaThreadTaskRunner();
 
   // Causes the idle handler to skip sending idle notifications
   // on the two next scheduled calls, so idle notifications are
   // not sent for at least one notification delay.
   void PostponeIdleNotification();
 
   scoped_refptr<media::GpuVideoAcceleratorFactories> GetGpuFactories();
 
   scoped_refptr<webkit::gpu::ContextProviderWebContext>
       SharedMainThreadContextProvider();
@@ skipping 264 matching lines @@
   bool is_one_copy_enabled_;
 
   std::map<int, mojo::MessagePipeHandle> pending_render_frame_connects_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderThreadImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_THREAD_IMPL_H_