Detect AudioInputStream muting and propagate to MediaStreamAudioSource.

content/renderer/media/media_stream_audio_source.cc

 // Copyright 2014 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_audio_source.h"
 
 #include "base/bind.h"
 #include "base/single_thread_task_runner.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "content/renderer/media/media_stream_audio_track.h"
@@ skipping 129 matching lines @@
 }
 
 void MediaStreamAudioSource::StopSourceOnError(const std::string& why) {
   VLOG(1) << why;
 
   // Stop source when error occurs.
   task_runner_->PostTask(
       FROM_HERE, base::Bind(&MediaStreamSource::StopSource, GetWeakPtr()));
 }
 
+void MediaStreamAudioSource::SetMutedState(bool muted_state) {
+  // TODO(ossu): Propagate this muted state into blink.
+  DVLOG(3) << "MediaStreamAudioSource::SetMutedState state=" << muted_state
+           << " (not implemented)";
+}
+
 }  // namespace content