media: Use native DemuxerStream enum types in media mojo interfaces

media/filters/chunk_demuxer.cc

 // 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.
 
 #include "media/filters/chunk_demuxer.h"
 
 #include <algorithm>
 #include <limits>
 #include <utility>
 
@@ skipping 1173 matching lines @@
 
     case DemuxerStream::VIDEO:
       owning_vector = &video_streams_;
       break;
 
     case DemuxerStream::TEXT:
       owning_vector = &text_streams_;
       break;
 
     case DemuxerStream::UNKNOWN:
-    case DemuxerStream::NUM_TYPES:
       NOTREACHED();
       return nullptr;
   }
 
   std::unique_ptr<ChunkDemuxerStream> stream =
       base::MakeUnique<ChunkDemuxerStream>(type, splice_frames_enabled_,
                                            media_track_id);
   DCHECK(track_id_to_demux_stream_map_.find(media_track_id) ==
          track_id_to_demux_stream_map_.end());
   track_id_to_demux_stream_map_[media_track_id] = stream.get();
@@ skipping 108 matching lines @@
 }
 
 void ChunkDemuxer::ShutdownAllStreams() {
   for (auto itr = source_state_map_.begin(); itr != source_state_map_.end();
        ++itr) {
     itr->second->Shutdown();
   }
 }
 
 }  // namespace media