Merge "Add system ui background handlers dispatch and delivery logging...

Merge "Add system ui background handlers dispatch and delivery logging thresholds" into udc-dev am: 02557142 am: 81e07828 am: 848a6367

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23201203



Change-Id: If187946d52f6d5b6b44085142d626465c6f00fd7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>