Switch the input code to use AudioBlockFifo

content/renderer/media/webrtc_local_audio_renderer.h

Index: content/renderer/media/webrtc_local_audio_renderer.h
diff --git a/content/renderer/media/webrtc_local_audio_renderer.h b/content/renderer/media/webrtc_local_audio_renderer.h
index ef50adc107e254c2e14e2219d7c9bc45700ff92c..58da881924aa34c9b3a7346e40d8c1ff4bc36204 100644
--- a/content/renderer/media/webrtc_local_audio_renderer.h
+++ b/content/renderer/media/webrtc_local_audio_renderer.h
@@ -21,7 +21,7 @@
 
 namespace media {
 class AudioBus;
-class AudioFifo;
+class AudioBlockFifo;
 class AudioOutputDevice;
 class AudioParameters;
 }
@@ -124,7 +124,7 @@ class CONTENT_EXPORT WebRtcLocalAudioRenderer
   scoped_refptr<media::AudioOutputDevice> sink_;
 
   // Contains copies of captured audio frames.
-  scoped_ptr<media::AudioFifo> loopback_fifo_;
+  scoped_ptr<media::AudioBlockFifo> loopback_fifo_;
 
   // Stores last time a render callback was received. The time difference
   // between a new time stamp and this value can be used to derive the