Fix various operations in ChunkDemuxer that were not being applied to text tracks.

media/filters/chunk_demuxer.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_FILTERS_CHUNK_DEMUXER_H_
 #define MEDIA_FILTERS_CHUNK_DEMUXER_H_
 
 #include <map>
 #include <string>
 #include <utility>
@@ skipping 200 matching lines @@
 
   // Aborts pending reads on all DemuxerStreams.
   void AbortPendingReads();
 
   // Completes any pending reads if it is possible to do so.
   void CompletePendingReadsIfPossible();
 
   // Seeks all SourceBufferStreams to |seek_time|.
   void SeekAllSources(base::TimeDelta seek_time);
 
+  // Calls Shutdown() on all DemuxerStreams.
+  void ShutdownAllStreams();
+
   mutable base::Lock lock_;
   State state_;
   bool cancel_next_seek_;
 
   DemuxerHost* host_;
   base::Closure open_cb_;
   NeedKeyCB need_key_cb_;
   bool enable_text_;
   // Callback used to report error strings that can help the web developer
   // figure out what is wrong with the content.
@@ skipping 29 matching lines @@
   // removed with RemoveID() but can not be re-added (yet).
   std::string source_id_audio_;
   std::string source_id_video_;
 
   DISALLOW_COPY_AND_ASSIGN(ChunkDemuxer);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FILTERS_CHUNK_DEMUXER_H_