Revert 290359 "Remove AudioBuffersState class."

trunk/src/media/audio/audio_output_proxy_unittest.cc

Index: trunk/src/media/audio/audio_output_proxy_unittest.cc
===================================================================
--- trunk/src/media/audio/audio_output_proxy_unittest.cc	(revision 290374)
+++ trunk/src/media/audio/audio_output_proxy_unittest.cc	(working copy)
@@ -25,6 +25,7 @@
 using ::testing::Return;
 using ::testing::SetArrayArgument;
 using media::AudioBus;
+using media::AudioBuffersState;
 using media::AudioInputStream;
 using media::AudioManager;
 using media::AudioManagerBase;
@@ -124,7 +125,7 @@
 
 class MockAudioSourceCallback : public AudioOutputStream::AudioSourceCallback {
  public:
-  int OnMoreData(AudioBus* audio_bus, int total_bytes_delay) {
+  int OnMoreData(AudioBus* audio_bus, AudioBuffersState buffers_state) {
     audio_bus->Zero();
     return audio_bus->frames();
   }