Merge "Dedicate a special caching slot for the layer override buffer" into sc-dev am: 8ad4bf4f am: e5d5bab8 am: f638d6e8

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/14331035

Change-Id: I9f825bb23f2526840e83147d2129832d1da888ec