Merge "Refactor StatsLogUserEventLogger" into udc-qpr-dev am: a700894732

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/ThemePicker/+/23865184

Change-Id: Ieb86ee67800ffb5a1a28aed5f78e3abf4770d23a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>