Layer: Guard against Region offset overflows am: 33da946835 am: aa2c811131

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/18887801

Change-Id: If0cd4978fd6d299cc4fa3989b38fa34b77540360
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>