Merge "Merge "Introduce WindowlessWindowLayout" into tm-qpr-dev am:...

Merge "Merge "Introduce WindowlessWindowLayout" into tm-qpr-dev am: c1534e97" into tm-qpr-dev-plus-aosp am: e17011a9

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17856348



Change-Id: Ifb96e77336a119496b66bc663fffe040340b39b0
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>