Do not pass the string device_id via IPC message to create an audio input stream

content/renderer/media/webrtc_local_audio_renderer.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 "content/renderer/media/webrtc_local_audio_renderer.h"
 
 #include "base/debug/trace_event.h"
 #include "base/logging.h"
 #include "base/message_loop_proxy.h"
 #include "base/synchronization/lock.h"
@@ skipping 67 matching lines @@
       DVLOG(1) << "FIFO is full";
     }
   }
 }
 
 void WebRtcLocalAudioRenderer::SetCaptureFormat(
     const media::AudioParameters& params) {
   NOTIMPLEMENTED() << "WebRtcLocalAudioRenderer::SetCaptureFormat()";
 }
 
-void WebRtcLocalAudioRenderer::OnCaptureDeviceStopped() {
-  DVLOG(1) << "WebRtcLocalAudioRenderer::OnCaptureDeviceStopped()";
-  DCHECK(thread_checker_.CalledOnValidThread());
-  {
-    base::AutoLock auto_lock(thread_lock_);
-    if (!sink_)
-      return;
-
-    if (loopback_fifo_)
-      loopback_fifo_->Clear();
-  }
-}
-
 // webrtc::ObserverInterface implementation
 void WebRtcLocalAudioRenderer::OnChanged() {
   DVLOG(1) << "WebRtcLocalAudioRenderer::OnChanged()";
   DCHECK(thread_checker_.CalledOnValidThread());
   base::AutoLock auto_lock(thread_lock_);
   track_is_enabled_ = audio_track_->enabled();
 }
 
 // WebRtcLocalAudioRenderer::WebRtcLocalAudioRenderer implementation.
 WebRtcLocalAudioRenderer::WebRtcLocalAudioRenderer(
@@ skipping 150 matching lines @@
   if (!sink_)
     return base::TimeDelta();
   return total_render_time();
 }
 
 bool WebRtcLocalAudioRenderer::IsLocalRenderer() const {
   return true;
 }
 
 }  // namespace content