Media Metadata API: Extract raw tags for audio/video.

media/base/audio_video_metadata_extractor.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_BASE_AUDIO_VIDEO_METADATA_EXTRACTOR_H_
 #define MEDIA_BASE_AUDIO_VIDEO_METADATA_EXTRACTOR_H_
 
+#include <map>
 #include <string>
 
 #include "base/basictypes.h"
 #include "media/base/media_export.h"
 
 struct AVDictionary;
 
 namespace media {
 
 class DataSource;
@@ skipping 26 matching lines @@
   const std::string& copyright() const;
   const std::string& date() const;
   int disc() const;
   const std::string& encoder() const;
   const std::string& encoded_by() const;
   const std::string& genre() const;
   const std::string& language() const;
   const std::string& title() const;
   int track() const;
 
+  const std::map<std::string, std::string>& raw_tags() const;
+
  private:
   void ExtractDictionary(AVDictionary* metadata);
 
   bool extracted_;
 
   int duration_;
   int width_;
   int height_;
 
   std::string album_;
   std::string artist_;
   std::string comment_;
   std::string copyright_;
   std::string date_;
   int disc_;
   std::string encoder_;
   std::string encoded_by_;
   std::string genre_;
   std::string language_;
   int rotation_;
   std::string title_;
   int track_;
 
+  std::map<std::string, std::string> raw_tags_;
+
   DISALLOW_COPY_AND_ASSIGN(AudioVideoMetadataExtractor);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_AUDIO_VIDEO_METADATA_EXTRACTOR_H_