Merge "Using rotate split layout while split active" into sc-dev am:...

Merge "Using rotate split layout while split active" into sc-dev am: e59e08b8 am: ab413073 am: afaf49b6

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/14909655

Change-Id: I738a96cdc3b63b01d8f3c4ba27f3fa4d5f606827