Merge "Add event log for keyguard occlude status chagne." into udc-dev am: 89942fd0

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21747740



Change-Id: Ieeb20e4666e57c8434d736369b40bc25a61fe815
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>