Grilled Chicken Breasts with Plum Salsa

Ingredients

Chicken:
2 teaspoons brown sugar
1/2 teaspoon salt
1/2 teaspoon ground cumin
1/4 teaspoon garlic powder
4 (4-ounce) skinless, boneless chicken breast halves
2 teaspoons vegetable oil

Plum Salsa:
1 cup chopped ripe plum (about 2 plums)
2 tablespoons chopped fresh or 1 teaspoon dried cilantro
2 tablespoons chopped red onion
2 teaspoons cider vinegar
1/4 teaspoon hot sauce
1/8 teaspoon salt