Merge "Add safety comments." into main am: cddabac71f am: c6ad6ecd46 am: 0efe86c1a1

Original change: https://android-review.googlesource.com/c/platform/system/extras/+/2682930

Change-Id: I59b8442344dd9a2c679c537282d5a10747c79453
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>