Cracked (not separated) forged dropout; repair?
I bought a vintage Motobecane frame with chromed rear stays and dropouts. Unfortunately, the drive-side rear dropout seems to have a crack about 3/4 the way through the chainstay web, right at the front of the raised dropout face, starting at the top. Please see attached photo. Is it a lost cause, or dodgy venture, to have it repaired by welding (grinding material away if that's necessary), or should I bite the bullet and have both rear dropouts replaced? I'd love to replace just the one, but they're obscure Simplex ones, that I'd probably never find a match for.
I understand that the chroming complicates things. Correct me if I'm wrong: there's really no way to rechrome the dropouts without rechroming the whole length of the stays as well. Actually, the whole frame is chromed, and the triangle painted over that, as is not uncommon. Chrome (though French ;-)) is in good shape, very little spotting/rusting.
More photos of the frame here: