Preheat The Oven Broiler. Line A Broiler Pan With Foil. Broil Salmon Steaks On The Prepared Pan 12 Minutes, Or Until Easily Flaked With A Fork. Heat Olive Oil In A Medium Saucepan Over Medium Heat, And Saute Onion Until Tender. Stir In Garlic, Tomatoes, And Cilantro. Cook Until Heated Through, 1 To 2 Minutes, And Remove From Heat. Mix In The Mangos. Serve Over The Salmon Steaks.