Merge "Update ownership for UidObserver related classes." into main am: 45140612 am: a1a8db6c

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/3431101



Change-Id: I39c63e63e3f551dcf3c48040f9c89167d3a6eb16
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>