Notify launch app over lockscreen to keyguard transition handler. am: 5b7daf45 am: 163bf491

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/24811629



Change-Id: I00e6dbe48d5a1deef0b5f1ae6c23c8d5b37cc901
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>