[automerger skipped] RESTRICT AUTOMERGE Refactor device policy resource APIs to a separate class am: eacf94a4 -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: I2cabfb7afd1e0a7adfa327cc26421cd833b0f286