Merge "DO NOT MERGE - m4v_h263: check header first before decoding a frame." into klp-dev am: da924b45e1 am: fdfad5899d am: f3383881ff  -s ours am: 486e62c5dd  -s ours am: 98a5397265 am: bb3d5445c9  -s ours am: 16531bf687 am: e138ca8b82
am: cfd9b9b85a

Change-Id: I330f5809dd7a8b8f80796f7764fa261f68a68a2e