Officially, there isn't a Gtool that will handle MacBook Pro corners. Sorry.
Unofficially, we've used the iCorner 1207-iPad Mini/Air tool to pull a dent from the corner of a unibody MBP display assembly. That setup has radii that is pretty close to the MBP corners, but not quite. If you're trying to pull a dent from an assembly so you can put a piece of glass in, it will probably work. If you want it to look like new, then you're probably going to be disappointed. Your Mileage May Vary.
Sorry for a dodgy answer, but that's the best that we've got. For now.
