Remove dead code related to media device enumerations and monitoring.

content/browser/renderer_host/media/audio_input_device_manager.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/browser/renderer_host/media/audio_input_device_manager.h"
 
 #include <memory>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 124 matching lines @@
   }
 }
 #endif
 
 void AudioInputDeviceManager::OpenOnDeviceThread(
     int session_id, const StreamDeviceInfo& info) {
   SCOPED_UMA_HISTOGRAM_TIMER(
       "Media.AudioInputDeviceManager.OpenOnDeviceThreadTime");
   DCHECK(IsOnDeviceThread());
 
-  StreamDeviceInfo out(info.device.type, info.device.name, info.device.id,
-                       info.device.group_id, 0, 0, 0);
+  StreamDeviceInfo out(info.device.type, info.device.name, info.device.id, 0, 0,
+                       0);
   out.session_id = session_id;
 
   MediaStreamDevice::AudioDeviceParameters& input_params = out.device.input;
 
   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kUseFakeDeviceForMediaStream)) {
     // Don't need to query the hardware information if using fake device.
     input_params.sample_rate = 44100;
     input_params.channel_layout = media::CHANNEL_LAYOUT_STEREO;
   } else {
@@ skipping 67 matching lines @@
 #if defined(OS_CHROMEOS)
 void AudioInputDeviceManager::SetKeyboardMicStreamActiveOnUIThread(
     bool active) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   chromeos::CrasAudioHandler::Get()->SetKeyboardMicActive(active);
 }
 #endif
 
 
 }  // namespace content