[automerger skipped] Prevent non-system overlays from showing over CDM UI am: d7f514abbe am: c51c89f233 -s ours

am skip reason: Change-Id I004843edf5a156dc07fb961edf80272f5cb50163 with SHA-1 d7f514abbe is in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/13121152

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I73ddd20aa858fe5038e0b2ae62ac40082e920446