Remove unused fields from //content.

content/renderer/media/webaudio_capturer_source.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 CONTENT_RENDERER_MEDIA_WEBAUDIO_CAPTURER_SOURCE_H_
 #define CONTENT_RENDERER_MEDIA_WEBAUDIO_CAPTURER_SOURCE_H_
 
 #include <stddef.h>
 
 #include "base/macros.h"
@@ skipping 70 matching lines @@
   // track has the required buffer size, regardless of the amount of audio
   // provided via each consumeAudio() call.
   media::AudioPushFifo fifo_;
 
   // Used to pass the reference timestamp between DeliverDecodedAudio() and
   // DeliverRebufferedAudio().
   base::TimeTicks current_reference_time_;
 
   // Synchronizes HandleCapture() with AudioCapturerSource calls.
   base::Lock lock_;
-  bool started_;
 
   // This object registers with a blink::WebMediaStreamSource. We keep track of
   // that in order to be able to deregister before stopping the audio track.
   blink::WebMediaStreamSource blink_source_;
 
   DISALLOW_COPY_AND_ASSIGN(WebAudioCapturerSource);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_WEBAUDIO_CAPTURER_SOURCE_H_