Add missing macros includes in media/.

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/macros.h"
 #include "base/memory/ref_counted.h"
 #include "media/audio/audio_io.h"
 #include "media/audio/audio_manager.h"
 #include "media/audio/audio_parameters.h"
 
 namespace base {
 class SingleThreadTaskRunner;
 }
 
 namespace media {
@@ skipping 45 matching lines @@
   const AudioParameters params_;
   std::string device_id_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(AudioOutputDispatcher);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_AUDIO_AUDIO_OUTPUT_DISPATCHER_H_