Merge "Ensure certain new UsageEvents have a String mapping."

                return "DEVICE_SHUTDOWN";

            case Event.DEVICE_STARTUP:

                return "DEVICE_STARTUP";

            case Event.USER_UNLOCKED:

                return "USER_UNLOCKED";

            case Event.USER_STOPPED:

                return "USER_STOPPED";

            case Event.LOCUS_ID_SET:

                return "LOCUS_ID_SET";

            default:

                return "UNKNOWN_TYPE_" + eventType;

        }