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)
@@ -125,11 +125,7 @@
 int AudioManagerAndroid::GetOptimalOutputFrameSize(int sample_rate,
                                                    int channels) {
   if (IsAudioLowLatencySupported()) {
-    int frame_size = GetAudioLowLatencyOutputFrameSize();
-    // Return the optimal size as a multiple of the low latency frame
-    // size that is close to the target frame size.
-    return ((kDefaultOutputBufferSize + frame_size / 2) / frame_size) *
-      frame_size;
+    return GetAudioLowLatencyOutputFrameSize();
   } else {
     return std::max(kDefaultOutputBufferSize,
                     Java_AudioManagerAndroid_getMinOutputFrameSize(