Plumb |input_channels| all the way to AudioManager

media/audio/audio_output_device.h

Index: media/audio/audio_output_device.h
===================================================================
--- media/audio/audio_output_device.h	(revision 181072)
+++ media/audio/audio_output_device.h	(working copy)
@@ -80,9 +80,6 @@
   // AudioRendererSink implementation.
   virtual void Initialize(const AudioParameters& params,
                           RenderCallback* callback) OVERRIDE;
-  virtual void InitializeIO(const AudioParameters& params,
-                            int input_channels,
-                            RenderCallback* callback) OVERRIDE;
   virtual void Start() OVERRIDE;
   virtual void Stop() OVERRIDE;
   virtual void Play() OVERRIDE;
@@ -126,8 +123,7 @@
   // The following methods are tasks posted on the IO thread that needs to
   // be executed on that thread. They interact with AudioMessageFilter and
   // sends IPC messages on that thread.
-  void CreateStreamOnIOThread(const AudioParameters& params,
-                              int input_channels);
+  void CreateStreamOnIOThread(const AudioParameters& params);
   void PlayOnIOThread();
   void PauseOnIOThread(bool flush);
   void ShutDownOnIOThread();
@@ -139,10 +135,6 @@
 
   AudioParameters audio_parameters_;
 
-  // The number of optional synchronized input channels having the same
-  // sample-rate and buffer-size as specified in audio_parameters_.
-  int input_channels_;
-
   RenderCallback* callback_;
 
   // A pointer to the IPC layer that takes care of sending requests over to