Mojify demuxers and allow running {Chunk/FFmpeg}Demuxer in a Utility Process

media/blink/websourcebuffer_impl.h

Index: media/blink/websourcebuffer_impl.h
diff --git a/media/blink/websourcebuffer_impl.h b/media/blink/websourcebuffer_impl.h
index d3378a8119b61e060bae819372abcda233d9bd01..0ed35fa2e11437d9534a7e8ba6a9c211f512c2bb 100644
--- a/media/blink/websourcebuffer_impl.h
+++ b/media/blink/websourcebuffer_impl.h
@@ -16,12 +16,12 @@
 #include "third_party/WebKit/public/platform/WebSourceBuffer.h"
 
 namespace media {
-class ChunkDemuxer;
+class SourceBuffer;
 class MediaTracks;
 
 class WebSourceBufferImpl : public blink::WebSourceBuffer {
  public:
-  WebSourceBufferImpl(const std::string& id, ChunkDemuxer* demuxer);
+  WebSourceBufferImpl(const std::string& id, SourceBuffer* source_buffer);
   ~WebSourceBufferImpl() override;
 
   // blink::WebSourceBuffer implementation.
@@ -47,7 +47,7 @@ class WebSourceBufferImpl : public blink::WebSourceBuffer {
   void InitSegmentReceived(std::unique_ptr<MediaTracks> tracks);
 
   std::string id_;
-  ChunkDemuxer* demuxer_;  // Owned by WebMediaPlayerImpl.
+  SourceBuffer* source_buffer_;  // Owned by WebMediaPlayerImpl.
 
   blink::WebSourceBufferClient* client_;