Merge "Set views below shelf explicitly invisible to skip hardware rendering"...

Merge "Set views below shelf explicitly invisible to skip hardware rendering" into sc-dev am: 1da11b55 am: 629c6aa1

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15261872

Change-Id: I806e9da595338a4508d2b9935a61f694c4249978