Adding VP8 Alpha support in Media Source

media/webm/webm_tracks_parser.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.
 
 #ifndef MEDIA_WEBM_WEBM_TRACKS_PARSER_H_
 #define MEDIA_WEBM_WEBM_TRACKS_PARSER_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 62 matching lines @@
   virtual bool OnListEnd(int id) OVERRIDE;
   virtual bool OnUInt(int id, int64 val) OVERRIDE;
   virtual bool OnFloat(int id, double val) OVERRIDE;
   virtual bool OnBinary(int id, const uint8* data, int size) OVERRIDE;
   virtual bool OnString(int id, const std::string& str) OVERRIDE;
 
   int64 track_type_;
   int64 track_num_;
   std::string track_name_;
   std::string track_language_;
+  int64 max_block_additional_id_;
   std::string codec_id_;
   std::vector<uint8> codec_private_;
   scoped_ptr<WebMContentEncodingsClient> track_content_encodings_client_;
 
   int64 audio_track_num_;
   int64 video_track_num_;
   TextTracks text_tracks_;
   std::set<int64> ignored_tracks_;
   std::string audio_encryption_key_id_;
   std::string video_encryption_key_id_;
   LogCB log_cb_;
 
   WebMAudioClient audio_client_;
   AudioDecoderConfig audio_decoder_config_;
 
   WebMVideoClient video_client_;
   VideoDecoderConfig video_decoder_config_;
 
   DISALLOW_COPY_AND_ASSIGN(WebMTracksParser);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_WEBM_WEBM_TRACKS_PARSER_H_