Add live mode detection in WebM MediaSource parser.

media/formats/webm/webm_stream_parser.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_STREAM_PARSER_H_
 #define MEDIA_FORMATS_WEBM_WEBM_STREAM_PARSER_H_
 
 #include "base/callback_forward.h"
 #include "base/memory/ref_counted.h"
 #include "media/base/audio_decoder_config.h"
@@ skipping 58 matching lines @@
   InitCB init_cb_;
   NewConfigCB config_cb_;
   NewBuffersCB new_buffers_cb_;
   bool ignore_text_tracks_;
   NeedKeyCB need_key_cb_;
 
   NewMediaSegmentCB new_segment_cb_;
   base::Closure end_of_segment_cb_;
   LogCB log_cb_;
 
+  bool unknown_segment_size_;
+
   // True if a new cluster id has been seen and its end has not yet been parsed.
   bool parsing_cluster_;
 
   scoped_ptr<WebMClusterParser> cluster_parser_;
   ByteQueue byte_queue_;
 
   DISALLOW_COPY_AND_ASSIGN(WebMStreamParser);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FORMATS_WEBM_WEBM_STREAM_PARSER_H_