Revert 277794 "Modifies AudioInputCallback::OnData and use media..."

trunk/src/media/audio/mac/audio_low_latency_input_mac.h

Index: trunk/src/media/audio/mac/audio_low_latency_input_mac.h
===================================================================
--- trunk/src/media/audio/mac/audio_low_latency_input_mac.h	(revision 277811)
+++ trunk/src/media/audio/mac/audio_low_latency_input_mac.h	(working copy)
@@ -49,7 +49,6 @@
 
 namespace media {
 
-class AudioBus;
 class AudioManagerMac;
 class DataBuffer;
 
@@ -166,10 +165,6 @@
   // Used to defer Start() to workaround http://crbug.com/160920.
   base::CancelableClosure deferred_start_cb_;
 
-  // Extra audio bus used for storage of deinterleaved data for the OnData
-  // callback.
-  scoped_ptr<media::AudioBus> audio_bus_;
-
   DISALLOW_COPY_AND_ASSIGN(AUAudioInputStream);
 };