Merge "Add support to persist app background restriction settings." into...

Merge "Add support to persist app background restriction settings." into tm-dev am: 4935cbc6 am: 9ce43009 am: 531f0389

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17354264



Change-Id: I443bae1fa60f5c5524005921f9b9543de8d809df
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>