Delete references to obsolete webrtc header files.

content/renderer/media/webrtc/webrtc_audio_sink.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 CONTENT_RENDERER_MEDIA_WEBRTC_WEBRTC_AUDIO_SINK_H_
 #define CONTENT_RENDERER_MEDIA_WEBRTC_WEBRTC_AUDIO_SINK_H_
 
 #include <stdint.h>
 
 #include <memory>
 #include <vector>
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/single_thread_task_runner.h"
 #include "base/synchronization/lock.h"
 #include "content/common/content_export.h"
 #include "content/public/renderer/media_stream_audio_sink.h"
 #include "content/renderer/media/media_stream_audio_level_calculator.h"
 #include "content/renderer/media/media_stream_audio_processor.h"
 #include "media/base/audio_parameters.h"
 #include "media/base/audio_push_fifo.h"
 #include "third_party/webrtc/api/mediastreamtrack.h"
-#include "third_party/webrtc/media/base/audiorenderer.h"
 
 namespace content {
 
 // Provides an implementation of the MediaStreamAudioSink which re-chunks audio
 // data into the 10ms chunks required by WebRTC and then delivers the audio to
 // one or more objects implementing the webrtc::AudioTrackSinkInterface.
 //
 // The inner class, Adapter, implements the webrtc::AudioTrackInterface and
 // manages one or more "WebRTC sinks" (i.e., instances of
 // webrtc::AudioTrackSinkInterface) which are added/removed on the WebRTC
@@ skipping 139 matching lines @@
   // Used to DCHECK that OnSetFormat() and OnData() are called on the same
   // thread.
   base::ThreadChecker audio_thread_checker_;
 
   DISALLOW_COPY_AND_ASSIGN(WebRtcAudioSink);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_WEBRTC_WEBRTC_AUDIO_SINK_H_