Merge "Track graphic buffer mode in OMXNodeInstance" into lmp-dev am: 7b27979c5e  -s ours am: 5095462e64  -s ours am: 12e787d348  -s ours
am: 33d5c3961e  -s ours

Change-Id: I9bd93131f8da871a8184d47dae0645c48efce017