In order to test the MediaPlayer info events, an OnInfoListener was added to
the VideoPlayerView class. It is set to listen to events coming from the
videoView. This allows testers to verify that events are occuring.
Note: This change was made by Alexander Oliphant who does not have write
permission to commit to the Android tree.
Change-Id: Ia2faa927b4fe2850e15644bd332e50601a424c4a