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 am: d4ebb1c11e  -s ours am: 1e4f17cc7f  -s ours
am: f683584e29  -s ours

Change-Id: I02d6e6339ab477d752a5c38f40891f907fea6010