Merge "pixel-sepolicy: allow pixelstats to query persist used size" into udc-dev am: 651913a1ea

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/google/pixel-sepolicy/+/22084389

Change-Id: I672a9882620993fe14837fd59f4a0d9b8a51e2a1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>