Preheat oven to 375°.
Lightly spoon flour into dry measuring cups, and level with a knife. Combine flour, baking soda, and salt. Beat brown sugar, butter, and vanilla extract at medium speed of a mixer until well-blended (about 5 minutes).
Beat egg whites until foamy using clean, dry beaters. Gradually add granulated sugar, 1 tablespoon at a time; beat until soft peaks form. Add corn syrup; beat until stiff peaks form. Fold brown sugar mixture into egg white mixture. Add flour mixture; stir in chocolate chips.
Drop by level tablespoons 1 inch apart onto baking sheets coated with cooking spray. Bake at 375° for 10 minutes or until golden. Remove from oven, and let stand 5 minutes. Remove cookies from pans, and cool on wire racks. Store loosely covered.