Merge "Merge "Add a @hide ctr to disable background layer in ActivityView &...

Merge "Merge "Add a @hide ctr to disable background layer in ActivityView & SurfaceView" into rvc-dev am: c54d84a8 am: 855ecdd0 am: 7becfa71" into rvc-qpr-dev-plus-aosp am: 65c24a77

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11700783

Change-Id: I3abbb729da391444efd93cf7dbf8f5e03a4240f2