Merge "Place mirrored layers offscreen instead of at root." into sc-dev am: 707e8136 am: 5be37afd am: e0f67576

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/15340011

Change-Id: Ie141b7ea08080834ea2a484e2457c23b82f04359