Replace MessageLoopProxy with SingleThreadTaskRunner for the rest of media/.

content/browser/renderer_host/media/audio_renderer_host_unittest.cc

 // 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.
 
 #include "base/bind.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/run_loop.h"
 #include "base/sync_socket.h"
 #include "content/browser/media/media_internals.h"
 #include "content/browser/renderer_host/media/audio_input_device_manager.h"
@@ skipping 247 matching lines @@
   }
 
   // SyncWithAudioThread() waits until all pending tasks on the audio thread
   // are executed while also processing pending task in message_loop_ on the
   // current thread. It is used to synchronize with the audio thread when we are
   // closing an audio stream.
   void SyncWithAudioThread() {
     base::RunLoop().RunUntilIdle();
 
     base::RunLoop run_loop;
-    audio_manager_->GetMessageLoop()->PostTask(
+    audio_manager_->GetTaskRunner()->PostTask(
         FROM_HERE, media::BindToCurrentLoop(run_loop.QuitClosure()));
     run_loop.Run();
   }
 
  private:
   // MediaStreamManager uses a DestructionObserver, so it must outlive the
   // TestBrowserThreadBundle.
   scoped_ptr<MediaStreamManager> media_stream_manager_;
   TestBrowserThreadBundle thread_bundle_;
   scoped_ptr<media::AudioManager> audio_manager_;
@@ skipping 64 matching lines @@
 }
 
 TEST_F(AudioRendererHostTest, CreateUnifiedStreamAndClose) {
   Create(true);
   Close();
 }
 
 // TODO(hclam): Add tests for data conversation in low latency mode.
 
 }  // namespace content