Merge "Vertically center app in landscape size compat mode" into sc-v2-dev am:...

Merge "Vertically center app in landscape size compat mode" into sc-v2-dev am: 5e30b007 am: c344ea47

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/16057112

Change-Id: I099a43ee23529b5b26cb04b746a0726720de007e