Merge "Add event log for keyguard occlude status chagne." into tm-qpr-dev am: 11c5ba05

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21701385



Change-Id: Ib1fbd4b505fd1c051664d8cae911b671a87137c6
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>