[automerger skipped] Merge "Check for downgrade and signature of outer .apex certificate" into sc-dev am: ab4f8efa am: 480843a9 am: 236eceb0 -s ours

am skip reason: Merged-In I12ff0ce121a349799062c76302de7c8f6407d8c2 with SHA-1 59344a6b is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/14807571

Change-Id: I7bc035e2b03eb57f10d9af3f4ce54711f46050b9