Merge "Make gralloc0 pass-through mapper handle layers" am: b756e23e5c am: 6982d1aec5 am: 6c3213c940 am: afc577e108 am: 8dd7db3204
am: 5a3d753808

Change-Id: Id6b7f2a4f40cd3d4506157c33ad097383bafe56c