Merge "Fix NMS.enqueueTextToast() for user visibility." into udc-dev am: f479b9c1 am: 956e07b2

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22210522



Change-Id: Ia59f95e107a8b416a875af3da909ee8e515a1b2e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>