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

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



Change-Id: Id3140b28b41bdd95e41d9ebcd77451b434a2517e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>