A historic waterfront property is about to undergo a massive redevelopment that could dramatically change the future of Baltimore. No, it’s not Harborplace. It’s Coke Point, a small, heavily polluted peninsula that juts into the Chesapeake Bay from Sparrows Point. Generations of workers labored at the blistering coke ovens there, turning coal into the fuel that powered nearby steel factories — and the region’s economy — until the steelmaking industry moved overseas and left an industrial wasteland behind.