Note: current resync logic keeps searching mp3 frames until it meets a
valid one. This resync logic works well with seek() operation, but in
SniffMP3(), this may cause false-positive classification for the
following MPEG-PS file format.
A possible MPEG-PS video file:
[PS header]...[mp3 frame][mp3 frame] ...
MP3 files:
[ID3 tag][mp3 frame][mp3 frame] ...
BUG: 5104562
Change-Id: Idd5020723f7bdb2fefc2a63fc8651580fd644399