[automerger skipped] RESTRICT AUTOMERGE Refactor device policy resource APIs to a separate class am: eacf94a4 am: cf38e345 -s ours

am skip reason: subject contains skip directive

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/DocumentsUI/+/17182904

Change-Id: Ia1b08862171b96e953c4655e6a14b08a4bdae50d