Removed MediaStreamTrackInterface::set_state

webrtc/api/remoteaudiosource.h

Index: webrtc/api/remoteaudiosource.h
diff --git a/webrtc/api/remoteaudiosource.h b/webrtc/api/remoteaudiosource.h
index abb55f62a768442eb0c8935499fe4f8c241df7b2..56e431e0a4cfc513b284a64df6fa3ee6310fe237 100644
--- a/webrtc/api/remoteaudiosource.h
+++ b/webrtc/api/remoteaudiosource.h
@@ -43,6 +43,9 @@ class RemoteAudioSource : public Notifier<AudioSourceInterface> {
   void AddSink(AudioTrackSinkInterface* sink) override;
   void RemoveSink(AudioTrackSinkInterface* sink) override;
 
+  void RegisterAudioObserver(AudioObserver* observer) override;
+  void UnregisterAudioObserver(AudioObserver* observer) override;
+
  protected:
   RemoteAudioSource();
   ~RemoteAudioSource() override;
@@ -56,8 +59,6 @@ class RemoteAudioSource : public Notifier<AudioSourceInterface> {
 
   // AudioSourceInterface implementation.
   void SetVolume(double volume) override;
-  void RegisterAudioObserver(AudioObserver* observer) override;
-  void UnregisterAudioObserver(AudioObserver* observer) override;
 
   class Sink;
   void OnData(const AudioSinkInterface::Data& audio);