Rename MediaSourceState -> SourceBufferState

media/base/media_track.h

 // Copyright 2016 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_BASE_MEDIA_TRACK_H_
 #define MEDIA_BASE_MEDIA_TRACK_H_
 
 #include <string>
 
 #include "media/base/media_export.h"
@@ skipping 28 matching lines @@
     id_ = id;
   }
 
  private:
   Type type_;
 
   // |bytestream_track_id_| is read from the bytestream and is guaranteed to be
   // unique only within the scope of single bytestream's initialization segment.
   // But we might have multiple bytestreams (MediaSource might have multiple
   // SourceBuffers attached to it, which translates into ChunkDemuxer having
-  // multiple MediaSourceStates and multiple bytestreams) or subsequent init
+  // multiple SourceBufferStates and multiple bytestreams) or subsequent init
   // segments may redefine the bytestream ids. Thus bytestream track ids are not
   // guaranteed to be unique at the Demuxer and HTMLMediaElement level. So we
   // generate truly unique media track |id_| on the Demuxer level.
   StreamParser::TrackId bytestream_track_id_;
   Id id_;
 
   // These properties are read from input streams by stream parsers as specified
   // in https://dev.w3.org/html5/html-sourcing-inband-tracks/.
   std::string kind_;
   std::string label_;
   std::string language_;
 };
 
 // Helper for logging.
 MEDIA_EXPORT const char* TrackTypeToStr(MediaTrack::Type type);
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_MEDIA_TRACK_H_