Merge "Only apply transient visibility for root task" into udc-dev am: deaed7c7 am: 34452882

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23557640



Change-Id: I940e8bb4303a80d21bc72188986a92a6bba62844
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>