Update Security String to 2019-06-05 Bug:129374896 Merged-In: 2c26c3d4c0314f8a3f905e5a7081556f7b4b353a am: 3ae4e858b7
am: cce67c52c9

Change-Id: Iad4a6c33c50cc2fd213a6a207c920ee540ae1c43