I have to agree with Nick on this - It's just a dip in the center portion of the fascia. From this angle it makes it look like there is eyebrowing but its an optical illusion. How do I know? My car has the same dip. The fact is there were several different molds used for the fascias so there is some variety in the finished pieces. It's not really re-pairable with out grinding it away... That being said, it is original and not a defect so repair is unnecessary.
Cheers
Steven