Merge "[CS] Make StatusBarNotificationPresenter a singleton." into udc-qpr-dev am: 30efa295

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/24150918



Change-Id: I197272dc50a0874f2c579655fc1fdad0558a8b5d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>