Merge "DO NOT MERGE: Apply input buffer validation also to AVC and MPEG4 encoders" into lmp-mr1-dev am: fb41e97c01  -s ours am: df8c8eccea  -s ours am: 03e101cfda  -s ours am: 280f41971a  -s ours
am: 8d78f41079  -s ours

Change-Id: I1c826ed5e4c4833ff62dcec15b4bc4e92550224a