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

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



Change-Id: I2a9c0cf33a140f15edb560cc9c7f026ecd0b99f3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>