Add support for incremental cluster parsing.

media/webm/webm_cluster_parser.h

 // Copyright (c) 2011 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_CLUSTER_PARSER_H_
 #define MEDIA_WEBM_WEBM_CLUSTER_PARSER_H_
 
 #include <deque>
 #include <string>
 
@@ skipping 35 matching lines @@
   virtual bool OnSimpleBlock(int track_num, int timecode, int flags,
                              const uint8* data, int size) OVERRIDE;
 
   double timecode_multiplier_;  // Multiplier used to convert timecodes into
                                 // microseconds.
   int audio_track_num_;
   base::TimeDelta audio_default_duration_;
   int video_track_num_;
   base::TimeDelta  video_default_duration_;
 
+  WebMListParser parser_;
+
   int64 last_block_timecode_;
 
   int64 cluster_timecode_;
   BufferQueue audio_buffers_;
   BufferQueue video_buffers_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(WebMClusterParser);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_WEBM_WEBM_CLUSTER_PARSER_H_