Merge "Update Security String to 2017-12-05 for December Security Bug: 67774760" into oc-dev am: 8fdda7d80d am: 4ec4999b54 am: b6cd7f71f9
am: 3a2b775a96

Change-Id: I35ed5c50c7c151db4aff1c48483f7e450822dce3