[automerger] Add bounds checking for transparency lookup am: 53f97a2dd6 am: f171582d41 am: 7c096751ec am: 964b4bc316 am: 1e74900d02 am: cdb13addd3 am: a9b1c97298 am: 5cef228075 am: 98a14c56a8 am: a5ed4c7ef4 am: 7226042d2a am: 6b2d056043 am: 24f183e9b7 am: f4c429cda5 Change-Id: I980a3ccd194ad39ebba6fc174d215cb6140a84b8