Merge "Set device credential's Window flag to be SECURE." into mnc-dev am: 8bffdc2613 am: cd66862b08 am: 769e1e31f5 am: b4db530aa5  -s ours am: 0c0728a947  -s ours am: 4d9e11990d  -s ours am: 3d94477fb8  -s ours am: 9d865d0c3e  -s ours
am: 7da421a293  -s ours

Change-Id: Ia717917794165cb2846f0836c9e42350028a3095