[automerger] Fix security hole in GateKeeperResponse. am: e74cae8f7c am: b1141b6ff0 am: 1cd9e8096f am: 6dfc8d8d4d am: a3c1de7e49 am: 4acf4fabf4 am: 40317127f4
am: 159cd14334

Change-Id: Iaed779900e094a5951e24771ed1f1f55b0c1b014