Merge "Auto show-hide overlay window if only privacy dot" into tm-dev am: 32d70dbe am: d8645d09

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17527087



Change-Id: I52ec74cdb5c35811625722c572cd0458393bbdc2
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>