Merge "Merge "Start tracking unknownvisibility immediately for launchBehind"...

Merge "Merge "Start tracking unknownvisibility immediately for launchBehind" into udc-dev am: 440cf522 am: 0a67167b" into udc-d1-dev-plus-aosp am: f738281a

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23089553



Change-Id: Id7aada3cd6e5d31c70267d1b7cc2952387336cf3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>