Merge "Only apply transient visibility for root task" into udc-dev am: deaed7c7 am: 1b7654b6

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



Change-Id: I5d7bb1178fdaec1ff99eda8bc0e0b42d2f2bcc12
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>