Merge "Set device credential's Window flag to be SECURE." into nyc-dev am: e69c4dcb8f am: e79c26a9da am: 80af194f8b am: adabc7561b am: 0c59dca90d  -s ours am: 96cc88e218  -s ours
am: 4aec1cee4e  -s ours

Change-Id: Id74bf2c46e0454e030e9fc0c4ee231450241aa79