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 am: 040b2b7c

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



Change-Id: I3d1d9224e7a19077f129b585899b1d26ac0debad
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>