Implemented passing media track info from ffmpeg into blink

media/blink/websourcebuffer_impl.h

 // Copyright 2013 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_BLINK_WEBSOURCEBUFFER_IMPL_H_
 #define MEDIA_BLINK_WEBSOURCEBUFFER_IMPL_H_
 
 #include <stddef.h>
 
 #include <string>
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
+#include "base/memory/scoped_ptr.h"
 #include "base/time/time.h"
 #include "third_party/WebKit/public/platform/WebSourceBuffer.h"
 
 namespace media {
 class ChunkDemuxer;
+class MediaTracks;
 
 class WebSourceBufferImpl : public blink::WebSourceBuffer {
  public:
   WebSourceBufferImpl(const std::string& id, ChunkDemuxer* demuxer);
   ~WebSourceBufferImpl() override;
 
   // blink::WebSourceBuffer implementation.
   void setClient(blink::WebSourceBufferClient* client) override;
   bool setMode(AppendMode mode) override;
   blink::WebTimeRanges buffered() override;
   bool evictCodedFrames(double currentPlaybackTime,
                         size_t newDataSize) override;
   void append(
       const unsigned char* data,
       unsigned length,
       double* timestamp_offset) override;
   void resetParserState() override;
   void remove(double start, double end) override;
   bool setTimestampOffset(double offset) override;
   void setAppendWindowStart(double start) override;
   void setAppendWindowEnd(double end) override;
   void removedFromMediaSource() override;
 
  private:
   // Demuxer callback handler to process an initialization segment received
   // during an append() call.
-  void InitSegmentReceived();
+  void InitSegmentReceived(scoped_ptr<MediaTracks> tracks);
 
   std::string id_;
   ChunkDemuxer* demuxer_;  // Owned by WebMediaPlayerImpl.
 
   blink::WebSourceBufferClient* client_;
 
   // Controls the offset applied to timestamps when processing appended media
   // segments. It is initially 0, which indicates that no offset is being
   // applied. Both setTimestampOffset() and append() may update this value.
   base::TimeDelta timestamp_offset_;
 
   base::TimeDelta append_window_start_;
   base::TimeDelta append_window_end_;
 
   DISALLOW_COPY_AND_ASSIGN(WebSourceBufferImpl);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BLINK_WEBSOURCEBUFFER_IMPL_H_