Merge "Use const refs to strings in PropertyProvider" into udc-dev am: ee66b97f

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/21750283



Change-Id: I7c2b9ab2520020d75cb51741f823701f3b1cbf08
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>