Add default impl for DemuxerStream::EnableBitstreamConverter();

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 <deque>
 #include <map>
 #include <string>
@@ skipping 64 matching lines @@
   bool UpdateAudioConfig(const AudioDecoderConfig& config, const LogCB& log_cb);
   bool UpdateVideoConfig(const VideoDecoderConfig& config, const LogCB& log_cb);
   void UpdateTextConfig(const TextTrackConfig& config, const LogCB& log_cb);
 
   void MarkEndOfStream();
   void UnmarkEndOfStream();
 
   // DemuxerStream methods.
   virtual void Read(const ReadCB& read_cb) OVERRIDE;
   virtual Type type() OVERRIDE;
-  virtual void EnableBitstreamConverter() OVERRIDE;
   virtual AudioDecoderConfig audio_decoder_config() OVERRIDE;
   virtual VideoDecoderConfig video_decoder_config() OVERRIDE;
   virtual bool SupportsConfigChanges() OVERRIDE;
   virtual VideoRotation video_rotation() OVERRIDE;
 
   // Returns the text track configuration.  It is an error to call this method
   // if type() != TEXT.
   TextTrackConfig text_track_config();
 
   // Sets the memory limit, in bytes, on the SourceBufferStream.
@@ skipping 290 matching lines @@
 
   // Indicates that splice frame generation is enabled.
   const bool splice_frames_enabled_;
 
   DISALLOW_COPY_AND_ASSIGN(ChunkDemuxer);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FILTERS_CHUNK_DEMUXER_H_