chainline has nothing to do with the frame, it depends on the rear wheel, crank, and bottom bracket. Also, "track specific" frames will have track geometry and won't be drilled for brakes and will generally make a miserable road-going fixed-gear for a first-time rider.

OP, next time you are checking out a used frame, look for cracks in the paint around the head tube. Specifically, check for cracked paint on the top side of the top tube and down tube directly behind the head tube lugs because this usually indicates a crash. If you don't know how to look for these things, do not buy used stuff off craigslist because you are going to get screwed sooner or later.