I got a very tiny rock chip in my windshield, probably about a quarter of an inch in size. I notified my insurance company and told them it was more of a precautionary thing because I had a tiny chip like this in the past grow to a full on crack in the windshield during the winter once.
Anyway, they sent out a glass tech who repaired the chip, but it is still noticeable. The tech said that on chips that small, all they can really do is seal it to prevent it from growing, but it will still be noticeable. Not sure if that was just an excuse or not, but that was my experience recently.