Merge "DO NOT MERGE: MPEG4Extractor: ensure returned status is checked." into lmp-dev am: 61df326a5e  -s ours am: 3092ed372c am: 74952e9616  -s ours am: 162672a9f6 am: 9215fa05fe am: 6757de98ca
am: a32f7beef6  -s ours

Change-Id: If81402f72f73362e4f642b77a433be09675d2b55