Merge changes from topic "am-25a1f704-80e7-4c0b-a6ef-9bda09527573" into oc-dev

* changes:
  [automerger] [DO NOT MERGE] Update Security String to 2019-06-01 Bug:129374896 am: bcdb638d6a am: f3e105e648 am: 41611b89ea am: ef4f971f0a skipped: 04ba31ff57
  [automerger] [DO NOT MERGE] Update Security String to 2019-06-01 Bug:129374896 am: bcdb638d6a am: f3e105e648 am: 41611b89ea am: ef4f971f0a
  [automerger] [DO NOT MERGE] Update Security String to 2019-06-01 Bug:129374896 am: bcdb638d6a am: f3e105e648 am: 41611b89ea
  [automerger] [DO NOT MERGE] Update Security String to 2019-06-01 Bug:129374896 am: bcdb638d6a am: f3e105e648
  [automerger] [DO NOT MERGE] Update Security String to 2019-06-01 Bug:129374896 am: bcdb638d6a
  [DO NOT MERGE] Update Security String to 2019-06-01 Bug:129374896
diff --git a/core/version_defaults.mk b/core/version_defaults.mk
index 0d5dc96..e41038f 100644
--- a/core/version_defaults.mk
+++ b/core/version_defaults.mk
@@ -165,7 +165,7 @@
     #  It must be of the form "YYYY-MM-DD" on production devices.
     #  It must match one of the Android Security Patch Level strings of the Public Security Bulletins.
     #  If there is no $PLATFORM_SECURITY_PATCH set, keep it empty.
-      PLATFORM_SECURITY_PATCH := 2018-04-05
+      PLATFORM_SECURITY_PATCH := 2019-06-01
 endif
 
 ifndef PLATFORM_BASE_OS