Merge "[DO NOT MERGE] Updating Security String to 2017-09-05 Bug:63846344" into nyc-dev am: 89aa0d18ac am: 6703815930 am: 6e74bc34e3  -s ours am: 6004c810a0  -s ours am: 9c8b857af3  -s ours am: 690b7e9091  -s ours am: bac9a62680  -s ours am: b4682b1f42
am: 9f454d2c1e

Change-Id: I3bd56c73dac62c5088d3029ad3b4b4cd92ccc8e7