MediaStreamTrack: Add echo-cancellation and device-id to getSettings

third_party/WebKit/Source/platform/mediastream/MediaStreamSource.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 72 matching lines @@
   ASSERT(m_requiresConsumer);
   MutexLocker locker(m_audioConsumersLock);
   HeapHashSet<Member<AudioDestinationConsumer>>::iterator it =
       m_audioConsumers.find(consumer);
   if (it == m_audioConsumers.end())
     return false;
   m_audioConsumers.remove(it);
   return true;
 }
 
+void MediaStreamSource::getSettings(WebMediaStreamTrack::Settings& settings) {
+  settings.deviceId = id();
+  m_extraData->getSettings(settings);
+}
+
 void MediaStreamSource::setAudioFormat(size_t numberOfChannels,
                                        float sampleRate) {
   ASSERT(m_requiresConsumer);
   MutexLocker locker(m_audioConsumersLock);
   for (HeapHashSet<Member<AudioDestinationConsumer>>::iterator it =
            m_audioConsumers.begin();
        it != m_audioConsumers.end(); ++it)
     (*it)->setFormat(numberOfChannels, sampleRate);
 }
 
 void MediaStreamSource::consumeAudio(AudioBus* bus, size_t numberOfFrames) {
   ASSERT(m_requiresConsumer);
   MutexLocker locker(m_audioConsumersLock);
   for (HeapHashSet<Member<AudioDestinationConsumer>>::iterator it =
            m_audioConsumers.begin();
        it != m_audioConsumers.end(); ++it)
     (*it)->consumeAudio(bus, numberOfFrames);
 }
 
 DEFINE_TRACE(MediaStreamSource) {
   visitor->trace(m_observers);
   visitor->trace(m_audioConsumers);
 }
 
 }  // namespace blink