If both cookies have null values, use the name difference.

            // If cookie2 has a null value, it should come later in

            // the list.

            if (cookie2.value == null) {

                // If both cookies have null values, fall back to using the name

                // difference.

                if (cookie1.value != null) {

                    return -1;

                }

            } else if (cookie1.value == null) {

                // Now we know that cookie2 does not have a null value, if

                // cookie1 has a null value, place it later in the list.