Fix MediaSource code so it can handle HE-AAC content that uses implicit signalling.

media/mp4/mp4_stream_parser.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_MP4_MP4_STREAM_PARSER_H_
 #define MEDIA_MP4_MP4_STREAM_PARSER_H_
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "media/base/media_export.h"
 #include "media/base/stream_parser.h"
 #include "media/mp4/offset_byte_queue.h"
 #include "media/mp4/track_run_iterator.h"
 
 namespace media {
 namespace mp4 {
 
 struct Movie;
 class BoxReader;
 
 class MEDIA_EXPORT MP4StreamParser : public StreamParser {
  public:
-  MP4StreamParser();
+  MP4StreamParser(bool has_sbr);
   virtual ~MP4StreamParser();
 
   virtual void Init(const InitCB& init_cb, const NewConfigCB& config_cb,
                     const NewBuffersCB& audio_cb,
                     const NewBuffersCB& video_cb,
                     const NeedKeyCB& need_key_cb,
                     const NewMediaSegmentCB& new_segment_cb) OVERRIDE;
   virtual void Flush() OVERRIDE;
   virtual bool Parse(const uint8* buf, int size) OVERRIDE;
 
@@ skipping 40 matching lines @@
   // Valid iff it is greater than the head of the queue.
   int64 mdat_tail_;
 
   scoped_ptr<mp4::Movie> moov_;
   scoped_ptr<mp4::TrackRunIterator> runs_;
 
   bool has_audio_;
   bool has_video_;
   uint32 audio_track_id_;
   uint32 video_track_id_;
+  bool has_sbr_;
 
   DISALLOW_COPY_AND_ASSIGN(MP4StreamParser);
 };
 
 }  // namespace mp4
 }  // namespace media
 
 #endif  // MEDIA_MP4_MP4_STREAM_PARSER_H_