In 12-inch nonstick skillet, heat oil over medium heat. Add thighs; cook 4 minutes on each side until brown. Add onion; cook 2 to 3 minutes or until just softened. Add white wine; stir to deglaze bottom of pan. Add broth and sprigs of rosemary; increase heat to medium-high; heat to simmering. Reduce heat to medium-low; cover and simmer 10 to 13 minutes or until juice of chicken is clear when thickest part is cut to bone (at least 165°F). Remove chicken to plate, and keep warm.