Include default communication devices in audio device enumerations. This removes heuristic that pic…

content/renderer/media/media_stream_dispatcher.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/media_stream_dispatcher.h"
 
 #include "base/logging.h"
 #include "content/common/media/media_stream_messages.h"
 #include "content/renderer/media/media_stream_dispatcher_eventhandler.h"
 #include "content/renderer/render_thread_impl.h"
@@ skipping 385 matching lines @@
                                             int index) {
   DCHECK(thread_checker_.CalledOnValidThread());
   LabelStreamMap::iterator it = label_stream_map_.find(label);
   if (it == label_stream_map_.end() ||
       it->second.video_array.size() <= static_cast<size_t>(index)) {
     return StreamDeviceInfo::kNoId;
   }
   return it->second.video_array[index].session_id;
 }
 
-bool MediaStreamDispatcher::IsAudioDuckingActive() const {
-  DCHECK(thread_checker_.CalledOnValidThread());
-  LabelStreamMap::const_iterator stream_it = label_stream_map_.begin();
-  while (stream_it != label_stream_map_.end()) {
-    const StreamDeviceInfoArray& audio_array = stream_it->second.audio_array;
-    for (StreamDeviceInfoArray::const_iterator device_it = audio_array.begin();
-         device_it != audio_array.end(); ++device_it) {
-      if (device_it->device.input.effects & media::AudioParameters::DUCKING)
-        return true;
-    }
-    ++stream_it;
-  }
-  return false;
-}
-
 }  // namespace content