Merge "Conditions Monitor as singleton." into udc-dev am: b3096501 am: be7504ca am: 03120003

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22431327



Change-Id: Ibcdaf85daab93685ad43b3364edd32735d756a0a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>