Ensures that WASAPI audio output does not go silent in rare cases

media/audio/win/audio_low_latency_output_win.h

Index: media/audio/win/audio_low_latency_output_win.h
diff --git a/media/audio/win/audio_low_latency_output_win.h b/media/audio/win/audio_low_latency_output_win.h
index cf7aeec095273ba1dfaa550ca3395c72744fb30b..116b92fd536ffb81046591230e5c3f214dff36de 100644
--- a/media/audio/win/audio_low_latency_output_win.h
+++ b/media/audio/win/audio_low_latency_output_win.h
@@ -162,6 +162,12 @@ class MEDIA_EXPORT WASAPIAudioOutputStream :
   // DelegateSimpleThread::Delegate implementation.
   virtual void Run() OVERRIDE;
 
+  // Core part of the thread loop which controls the actual rendering.
+  // Checks available amount of space in the endpoint buffer and reads
+  // data from the client to fill up the buffer without causing audio
+  // glitches.
+  void RenderAudioFromSource(IAudioClock* audio_clock, UINT64 device_frequency);
+
   // Issues the OnError() callback to the |sink_|.
   void HandleError(HRESULT err);