Merge "Add test API to confirm enabled status." into udc-dev am: 9c7706fb am: a4e0e5f5

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22367348



Change-Id: Ie90f3495b343b520724e120b5238addc7c5d9383
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>