Add missing macros includes in media/.

media/audio/cras/cras_unified.h

 // Copyright 2013 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.
 //
 // Creates a unified stream based on the cras (ChromeOS audio server) interface.
 //
 // CrasUnifiedStream object is *not* thread-safe and should only be used
 // from the audio thread.
 
 #ifndef MEDIA_AUDIO_LINUX_CRAS_UNIFIED_H_
 #define MEDIA_AUDIO_LINUX_CRAS_UNIFIED_H_
 
 #include <cras_client.h>
 
 #include "base/compiler_specific.h"
+#include "base/macros.h"
 #include "media/audio/audio_io.h"
 #include "media/audio/audio_parameters.h"
 
 namespace media {
 
 class AudioManagerCras;
 
 // Implementation of AudioOuputStream for Chrome OS using the Chrome OS audio
 // server.
 // TODO(dgreid): This class is used for only output, either remove all the
@@ skipping 81 matching lines @@
 
   // Direciton of the stream.
   CRAS_STREAM_DIRECTION stream_direction_;
 
   DISALLOW_COPY_AND_ASSIGN(CrasUnifiedStream);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_AUDIO_LINUX_CRAS_UNIFIED_H_