Uses AudioFlinger to signal battery stats for audio.

Bug: 18177221
Change-Id: I704010c037cb99bb74b98798ee8e494fa8bdc875
diff --git a/media/libmediaplayerservice/MediaPlayerService.cpp b/media/libmediaplayerservice/MediaPlayerService.cpp
index 16140e7..a416381 100644
--- a/media/libmediaplayerservice/MediaPlayerService.cpp
+++ b/media/libmediaplayerservice/MediaPlayerService.cpp
@@ -286,9 +286,7 @@
     // reset battery stats
     // if the mediaserver has crashed, battery stats could be left
     // in bad state, reset the state upon service start.
-    BatteryNotifier& notifier(BatteryNotifier::getInstance());
-    notifier.noteResetVideo();
-    notifier.noteResetAudio();
+    BatteryNotifier::getInstance().noteResetVideo();
 
     MediaPlayerFactory::registerBuiltinFactories();
 }