Merge "Fix invalid active window if accessibility framework doesn't track...

Merge "Fix invalid active window if accessibility framework doesn't track windows" into tm-dev am: a7f5aa5b

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17755779



Change-Id: I0a32be9e53d4bcd3134c188c8380acf89ad11c2b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>