Merge "Accept a Window as shown if it's in any transition" into udc-dev am: a27edf5a

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21780005



Change-Id: I862fc3d1a93564098dd76203595b1e7d8be0c44e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>