Detect AudioInputStream muting and propagate to MediaStreamAudioSource.

content/renderer/media/media_stream_source.h

 // 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.
 
 #ifndef CONTENT_RENDERER_MEDIA_MEDIA_STREAM_SOURCE_H_
 #define CONTENT_RENDERER_MEDIA_MEDIA_STREAM_SOURCE_H_
 
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/logging.h"
@@ skipping 27 matching lines @@
   // JavaScript call to GetUserMedia, e.g., a camera or microphone.
   const StreamDeviceInfo& device_info() const {
     return device_info_;
   }
 
   // Stops the source (by calling DoStopSource()). This runs the
   // |stop_callback_| (if set), and then sets the
   // WebMediaStreamSource::readyState to ended.
   void StopSource();
 
+  // Sets the source's state to muted or to live.
+  void SetSourceMuted(bool is_muted);
+
   // Sets device information about a source that has been created by a
   // JavaScript call to GetUserMedia. F.E a camera or microphone.
   void SetDeviceInfo(const StreamDeviceInfo& device_info);
 
   // Sets a callback that will be triggered when StopSource is called.
   void SetStopCallback(const SourceStoppedCallback& stop_callback);
 
   // Clears the previously-set SourceStoppedCallback so that it will not be run
   // in the future.
   void ResetSourceStoppedCallback();
@@ skipping 10 matching lines @@
   // In debug builds, check that all methods are being called on the main
   // thread.
   base::ThreadChecker thread_checker_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaStreamSource);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_MEDIA_STREAM_SOURCE_H_