Statsd log remaining notification events.

This CL maps the remaining Tron logging in NotificationManagerService
that I think should be ported to statsd.

Also refactors NotificationRecordLogger slightly to improve testing.

Bug: 146488473
Test: atest NotificationManagerServiceTest
Test: statsd_testdrive 90
Test: adb shell cmd stats print-logs && adb logcat -s statsd:I | grep ' (90)'
Change-Id: I826cd5669fcca10b88e324616b9d3c16afac00eb