Ack messages when WindowInfosListeners are removed am: 7da995f39e am: 87300af139

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/24907058

Change-Id: I982d9199720039d277d06232444a7a8fe769dbec
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>