Merge "Secure setting to control seen notif filter" into tm-qpr-dev am: d0fea880

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/20620796



Change-Id: I6e383f9d28993b2d0d48abd2d4b3e130b3f5117d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>