Merge "Merge "Do not create window decorations for split roots" into udc-dev...

Merge "Merge "Do not create window decorations for split roots" into udc-dev am: 782fc415" into udc-d1-dev am: 689c6576 am: 530fb165

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23013944



Change-Id: Id3b8c3937e4f4503966731a546e5890dcc39b232
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>