some clean up of video size change notification

need to consider rotation when notifying video size change after
initial prepare, in addition to after an output format change.

Bug: 16870964
Change-Id: Icd1c9e901ac932e720ce95b8a983c0edcf251c35
diff --git a/media/libmediaplayerservice/nuplayer/StreamingSource.cpp b/media/libmediaplayerservice/nuplayer/StreamingSource.cpp
index 28f0d50..2e9a29a 100644
--- a/media/libmediaplayerservice/nuplayer/StreamingSource.cpp
+++ b/media/libmediaplayerservice/nuplayer/StreamingSource.cpp
@@ -44,7 +44,7 @@
 }
 
 void NuPlayer::StreamingSource::prepareAsync() {
-    notifyVideoSizeChanged(0, 0);
+    notifyVideoSizeChanged();
     notifyFlagsChanged(0);
     notifyPrepared();
 }