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

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



Change-Id: I24faa2d28edee85a4f50ebcbef2785fd1d7586e9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>