Remove a bunch of dead fields found by Scythe.

media/filters/dummy_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.
 
 // Implements the Demuxer interface. DummyDemuxer returns corresponding
 // DummyDemuxerStream as signal for media pipeline to construct correct
 // playback channels. Used in WebRTC local video capture pipeline, where
 // demuxing is not needed.
 
 #ifndef MEDIA_FILTERS_DUMMY_DEMUXER_H_
@@ skipping 38 matching lines @@
                           const PipelineStatusCB& status_cb) OVERRIDE;
   virtual scoped_refptr<DemuxerStream> GetStream(
       DemuxerStream::Type type) OVERRIDE;
   virtual base::TimeDelta GetStartTime() const OVERRIDE;
   virtual int GetBitrate() OVERRIDE;
 
  protected:
   virtual ~DummyDemuxer();
 
  private:
-  bool has_video_;
-  bool has_audio_;
   std::vector< scoped_refptr<DummyDemuxerStream> > streams_;
 
   DISALLOW_COPY_AND_ASSIGN(DummyDemuxer);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FILTERS_DUMMY_DEMUXER_H_