Merge "Revert "Revert "Revert "Customize StubVolume implementation for ARC"""" am: 922af320dd

Original change: https://android-review.googlesource.com/c/platform/system/vold/+/1554441

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I7ed3af5a90858ebdb33581d4b63a4a2e5dc58105