Switching audio clients to using RestartableAudioRendererSink interface as a sink.

content/renderer/media/audio_renderer_mixer_manager.h

Index: content/renderer/media/audio_renderer_mixer_manager.h
diff --git a/content/renderer/media/audio_renderer_mixer_manager.h b/content/renderer/media/audio_renderer_mixer_manager.h
index fa8f96208577feecae438ab9525343cd04b17e9e..d33dbc39cf5ead6e6d3da222c95c4801f295c180 100644
--- a/content/renderer/media/audio_renderer_mixer_manager.h
+++ b/content/renderer/media/audio_renderer_mixer_manager.h
@@ -121,6 +121,14 @@ class CONTENT_EXPORT AudioRendererMixerManager {
   // Overrides the AudioRendererSink implementation for unit testing.
   void SetAudioRendererSinkForTesting(media::AudioRendererSink* sink);
 
+  // A helper to get hardware output parameters in the absence of
+  // AudioOutputDevice.
+  static media::AudioParameters GetHardwareOutputParams(
+      int render_frame_id,
+      int session_id,
+      const std::string& device_id,
+      const url::Origin& security_origin);
+
   // Active mixers.
   AudioRendererMixerMap mixers_;
   base::Lock mixers_lock_;