Revert "Use AudioTrack::event_type not int in callback"

This reverts commit 2225e4b7049fa3fb9d39a068b8268b63c952d7c1
diff --git a/media/libmediaplayerservice/MediaPlayerService.cpp b/media/libmediaplayerservice/MediaPlayerService.cpp
index 0676fcd..eae93ff 100644
--- a/media/libmediaplayerservice/MediaPlayerService.cpp
+++ b/media/libmediaplayerservice/MediaPlayerService.cpp
@@ -1454,7 +1454,7 @@
 
 // static
 void MediaPlayerService::AudioOutput::CallbackWrapper(
-        AudioTrack::event_type event, void *cookie, void *info) {
+        int event, void *cookie, void *info) {
     //LOGV("callbackwrapper");
     if (event != AudioTrack::EVENT_MORE_DATA) {
         return;