Add missing macros includes in media/.

media/formats/webm/webm_audio_client.h

 // Copyright 2014 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_FORMATS_WEBM_WEBM_AUDIO_CLIENT_H_
 #define MEDIA_FORMATS_WEBM_WEBM_AUDIO_CLIENT_H_
 
 #include <string>
 #include <vector>
 
+#include "base/macros.h"
 #include "media/base/media_log.h"
 #include "media/formats/webm/webm_parser.h"
 
 namespace media {
 class AudioDecoderConfig;
 
 // Helper class used to parse an Audio element inside a TrackEntry element.
 class WebMAudioClient : public WebMParserClient {
  public:
   explicit WebMAudioClient(const scoped_refptr<MediaLog>& media_log);
@@ skipping 24 matching lines @@
   int channels_;
   double samples_per_second_;
   double output_samples_per_second_;
 
   DISALLOW_COPY_AND_ASSIGN(WebMAudioClient);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FORMATS_WEBM_WEBM_AUDIO_CLIENT_H_