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

content/renderer/media/webrtc_audio_device_impl.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_audio_device_impl.h"
 
 #include "base/bind.h"
 #include "base/metrics/histogram.h"
 #include "base/string_util.h"
 #include "base/win/windows_version.h"
@@ skipping 202 matching lines @@
     SetMicrophoneVolume(new_mic_level);
   }
 }
 
 void WebRtcAudioDeviceImpl::SetCaptureFormat(
     const media::AudioParameters& params) {
   DVLOG(1) << "WebRtcAudioDeviceImpl::SetCaptureFormat()";
   input_audio_parameters_ = params;
 }
 
-void WebRtcAudioDeviceImpl::OnCaptureDeviceStopped() {
-  DVLOG(1) << "WebRtcAudioDeviceImpl::OnCaptureDeviceStopped()";
-}
-
 int32_t WebRtcAudioDeviceImpl::ChangeUniqueId(const int32_t id) {
   NOTIMPLEMENTED();
   return -1;
 }
 
 int32_t WebRtcAudioDeviceImpl::TimeUntilNextProcess() {
   // Calculate the number of milliseconds until this module wants its
   // Process method to be called.
   base::TimeDelta delta_time = (base::TimeTicks::Now() - last_process_time_);
   int64 time_until_next =
@@ skipping 620 matching lines @@
   NOTIMPLEMENTED();
   return -1;
 }
 
 int32_t WebRtcAudioDeviceImpl::GetLoudspeakerStatus(bool* enabled) const {
   NOTIMPLEMENTED();
   return -1;
 }
 
 }  // namespace content