Merge "Move CheckAtMostOneLatest and CheckUniqueLoopDm to be private methods" am: 088ee40d86 am: 02ff675b46

Original change: https://android-review.googlesource.com/c/platform/system/apex/+/1537581

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I80256719d2074376a4cc9d9334cc18cb29971af6