NuPlayer: pause playback when buffering is low

also fix buffering percentage report (should be the buffered position)

bug: 18730095
Change-Id: I11e7ca4ba9e772a1ae76861ca1ff1725b62f65ae
diff --git a/media/libmediaplayerservice/nuplayer/NuPlayerSource.h b/media/libmediaplayerservice/nuplayer/NuPlayerSource.h
index 5bf9187..8f18464 100644
--- a/media/libmediaplayerservice/nuplayer/NuPlayerSource.h
+++ b/media/libmediaplayerservice/nuplayer/NuPlayerSource.h
@@ -49,6 +49,9 @@
         kWhatBufferingUpdate,
         kWhatBufferingStart,
         kWhatBufferingEnd,
+        kWhatPauseOnBufferingStart,
+        kWhatResumeOnBufferingEnd,
+        kWhatCacheStats,
         kWhatSubtitleData,
         kWhatTimedTextData,
         kWhatQueueDecoderShutdown,