Merge "Kick off health checks with lock held." into udc-dev am: 52cef828 am: 1437cc36

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22139841



Change-Id: I162ccfbc5e279d596694287e5813eb156c2b8aa1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>