Refactor MediaResource to be multi-stream capable

media/base/media_url_demuxer.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_URL_DEMUXER_H_
 #define MEDIA_BASE_MEDIA_URL_DEMUXER_H_
 
 #include <stddef.h>
 
 #include "base/callback.h"
@@ skipping 21 matching lines @@
 // MediaResource.
 class MEDIA_EXPORT MediaUrlDemuxer : public Demuxer {
  public:
   MediaUrlDemuxer(
       const scoped_refptr<base::SingleThreadTaskRunner>& task_runner,
       const GURL& media_url,
       const GURL& first_party_for_cookies);
   ~MediaUrlDemuxer() override;
 
   // MediaResource interface.
-  DemuxerStream* GetStream(DemuxerStream::Type type) override;
+  std::vector<DemuxerStream*> GetStreams() override;
+  void SetStreamStatusChangeCB(const StreamStatusChangeCB& cb) override;
   MediaUrlParams GetMediaUrlParams() const override;
   MediaResource::Type GetType() const override;
 
   // Demuxer interface.
   std::string GetDisplayName() const override;
   void Initialize(DemuxerHost* host,
                   const PipelineStatusCB& status_cb,
                   bool enable_text_tracks) override;
   void StartWaitingForSeek(base::TimeDelta seek_time) override;
   void CancelPendingSeek(base::TimeDelta seek_time) override;
@@ skipping 12 matching lines @@
   MediaUrlParams params_;
 
   scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaUrlDemuxer);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_MEDIA_URL_DEMUXER_H_