Hi Chris.....not sure about total repair. I don't think that this is a chrome finish on 'metal' in the traditional classic car style - so repair may not be possible. I think the best you can expect is to try some chrome polish etc.
One consolation is that this is just another stone chip and it's only really noticeable because YOU know it's there - I'd live with it to be honest.....promise I won't point it out at our next meet.
If it was completely cracked then that's another matter but I don't think it's worth the expense and effort involved in replacing it. And that's coming from a 'perfectionist' like me.