[automerger skipped] Merge "Add per-file OWNERS for BatteryStats" am: cac4499628 am: d8a9268460 am: 0ad8cb5966 -s ours

am skip reason: skipped by user dplotnikov

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1520758

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I5637fde449188013d0e8a42c3bb7c7fa835f2aaf