Fixing chips in plastic bezel

Honestly, I dont think I'd do anything to it. The scars show a lot better on the wookbench than they will in the car . Switch knobs nearly cover them .
That piece is vacuum plated ABS and someone may want to have it replated someday. At that time you would use a plastic welder or even a soldering iron to rebuild the plaxstic and work down to shape. That insures theirs no conflict with the plating process. Just my .02