media: Cleanup class/struct forward declarations

media/filters/chunk_demuxer.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_FILTERS_CHUNK_DEMUXER_H_
 #define MEDIA_FILTERS_CHUNK_DEMUXER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 10 matching lines @@
 #include "media/base/demuxer.h"
 #include "media/base/demuxer_stream.h"
 #include "media/base/media_tracks.h"
 #include "media/base/ranges.h"
 #include "media/base/stream_parser.h"
 #include "media/filters/source_buffer_state.h"
 #include "media/filters/source_buffer_stream.h"
 
 namespace media {
 
-class FFmpegURLProtocol;
-
 class MEDIA_EXPORT ChunkDemuxerStream : public DemuxerStream {
  public:
   typedef std::deque<scoped_refptr<StreamParserBuffer> > BufferQueue;
 
   ChunkDemuxerStream(Type type, MediaTrack::Id media_track_id);
   ~ChunkDemuxerStream() override;
 
   // ChunkDemuxerStream control methods.
   void StartReturningData();
   void AbortReads();
@@ skipping 400 matching lines @@
   int detected_text_track_count_;
 
   std::map<MediaTrack::Id, DemuxerStream*> track_id_to_demux_stream_map_;
 
   DISALLOW_COPY_AND_ASSIGN(ChunkDemuxer);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FILTERS_CHUNK_DEMUXER_H_