Replace MessageLoopProxy with SingleThreadTaskRunner for the rest of media/.

media/audio/audio_output_controller.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 MEDIA_AUDIO_AUDIO_OUTPUT_CONTROLLER_H_
 #define MEDIA_AUDIO_AUDIO_OUTPUT_CONTROLLER_H_
 
 #include "base/atomic_ref_count.h"
 #include "base/callback.h"
 #include "base/cancelable_callback.h"
@@ skipping 243 matching lines @@
   // OnMoreIOData() method, and only when it is valid to do so.  This is for
   // sanity-checking the behavior of platform implementations of
   // AudioOutputStream.  In other words, multiple contention is not expected,
   // nor in the design here.
   base::AtomicRefCount num_allowed_io_;
 
   // SyncReader is used only in low latency mode for synchronous reading.
   SyncReader* const sync_reader_;
 
   // The message loop of audio manager thread that this object runs on.
-  const scoped_refptr<base::MessageLoopProxy> message_loop_;
+  const scoped_refptr<base::SingleThreadTaskRunner> message_loop_;
 
 #if defined(AUDIO_POWER_MONITORING)
   // Scans audio samples from OnMoreIOData() as input to compute power levels.
   AudioPowerMonitor power_monitor_;
 
   // Periodic callback to report power levels during playback.
   base::CancelableClosure power_poll_callback_;
 #endif
 
   // Flags when we've asked for a stream to start but it never did.
   base::AtomicRefCount on_more_io_data_called_;
   scoped_ptr<base::OneShotTimer<AudioOutputController> > wedge_timer_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioOutputController);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_AUDIO_AUDIO_OUTPUT_CONTROLLER_H_