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

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

Change-Id: Ie7725971d1847beb82f36fa4e469bfb42b64a9d7