[automerger skipped] [automerge] Set the offset of the dim layer of DisplayArea. 2p: b1bd44227c am: dda4397093 -s ours

am skip reason: Merged-In I8fd3494a3cd7ad6183ce6aa442e49f85b441c73f with SHA-1 f80d567a7e is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/16919251

Change-Id: Ie520739323202d126e915ce9510802bcb47f353d