Merge "Use actual resizability for split-screen operations" into rvc-dev am:...

Merge "Use actual resizability for split-screen operations" into rvc-dev am: 058a713a am: ef6d79a5

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11854827

Change-Id: Ib549d9429564e39f8f493974f9d9c244e24cc125