In small bowl, toss 1/2 cup of the chocolate chips with 1 tablespoon dry cake mix. Make cake mix as directed on box, using remaining cake mix, water, oil and egg whites. Stir in the 1/2 cup coated chocolate chips. Reserve 1 cup of the batter. Pour remaining batter into pan. Stir chocolate syrup into reserved batter. Drop by tablespoonfuls randomly in 8 mounds in pan. Cut through batters in S-shaped curves. Turn pan one-fourth turn; repeat.