Enable low latency mode for audio playback on Android

media/audio/android/audio_manager_android.cc

Index: media/audio/android/audio_manager_android.cc
===================================================================
--- media/audio/android/audio_manager_android.cc	(revision 206793)
+++ media/audio/android/audio_manager_android.cc	(working copy)
@@ -128,8 +128,7 @@
     int frame_size = GetAudioLowLatencyOutputFrameSize();
     // Return the optimal size as a multiple of the low latency frame

[DaleCurtis, 2013/06/17 21:49:53]

Also delete this comment and just return  GetAudioLowLatencyOutputFrameSize();
directly too.

[wjia(left Chromium), 2013/06/17 22:04:10]

Done.

     // size that is close to the target frame size.
-    return ((kDefaultOutputBufferSize + frame_size / 2) / frame_size) *
-      frame_size;
+    return frame_size;
   } else {
     return std::max(kDefaultOutputBufferSize,
                     Java_AudioManagerAndroid_getMinOutputFrameSize(