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

Merge "Only apply transient visibility for root task" into udc-dev am: deaed7c7 am: 0e56da37 am: 18e4bbc2

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



Change-Id: Ibb92c3a7b43e032f342770f0dff977d20ec58388
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>