Move MessageLoop to base namespace.

media/audio/audio_output_dispatcher.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.
 
 // AudioOutputDispatcher is a single-threaded base class that dispatches
 // creation and deletion of audio output streams. AudioOutputProxy objects use
 // this class to allocate and recycle actual audio output streams. When playback
 // is started, the proxy calls StartStream() to get an output stream that it
 // uses to play audio. When playback is stopped, the proxy returns the stream
 // back to the dispatcher by calling StopStream().
 //
 // AudioManagerBase creates one specialization of AudioOutputDispatcher on the
 // audio thread for each possible set of audio parameters. I.e streams with
 // different parameters are managed independently.  The AudioOutputDispatcher
 // instance is then deleted on the audio thread when the AudioManager shuts
 // down.
 
 #ifndef MEDIA_AUDIO_AUDIO_OUTPUT_DISPATCHER_H_
 #define MEDIA_AUDIO_AUDIO_OUTPUT_DISPATCHER_H_
 
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
 #include "base/timer.h"
 #include "media/audio/audio_io.h"
 #include "media/audio/audio_manager.h"
 #include "media/audio/audio_parameters.h"
 
+namespace base {
 class MessageLoop;
+}
 
 namespace media {
 
 class AudioOutputProxy;
 
 class MEDIA_EXPORT AudioOutputDispatcher
     : public base::RefCountedThreadSafe<AudioOutputDispatcher> {
  public:
   AudioOutputDispatcher(AudioManager* audio_manager,
                         const AudioParameters& params);
@@ skipping 25 matching lines @@
 
  protected:
   friend class base::RefCountedThreadSafe<AudioOutputDispatcher>;
   friend class AudioOutputProxyTest;
 
   virtual ~AudioOutputDispatcher();
 
   // A no-reference-held pointer (we don't want circular references) back to the
   // AudioManager that owns this object.
   AudioManager* audio_manager_;
-  MessageLoop* message_loop_;
+  base::MessageLoop* message_loop_;
   AudioParameters params_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(AudioOutputDispatcher);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_AUDIO_AUDIO_OUTPUT_DISPATCHER_H_