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) {
+  DVLOG(3) << "MediaStreamAudioSource::SetMutedState state=" << muted_state;
+  task_runner_->PostTask(
+      FROM_HERE, base::Bind(&MediaStreamSource::SetSourceMuted, GetWeakPtr(),

[ossu-chromium, 2017/06/01 15:56:59]

I've put SetSourceMuted directly in MediaStreamSource for now. It's got similar
functionality to what's already in MediaStreamVideoSource, so maybe I should get
both implementations to call SetSourceMuted. Or I should just put this
functionality here in MediaStreamAudioSource instead?

[Max Morin, 2017/06/02 09:56:04]

I think someone with experience in this layer should look at this code. Judging
from the git log, maybe miu@?

[ossu-chromium, 2017/06/02 10:47:59]

Sounds good. I'll add him!

+                            muted_state));
+}
+
 }  // namespace content