Update security string to 2015-12-01 - DO NOT MERGE am: 6575d4a2a8 am: cc9ac27157 am: fe64ce145e  -s ours am: 0e8cf97670
am: 07e2c19536

* commit '07e2c195367119faa4645d3f9f0dcb1c6aba7396':
  Update security string to 2015-12-01 - DO NOT MERGE