Corrosion - degradation on shiny surfaces

[Tafflad]

Noticed that several bezels have a damaged finish on the shiny surface.
As an example the VolvoPenta single lever control has a square bezel around it ... with a shiny chrome effect finish.
It's a plastic trim so its not chrome or stainless, same for the bezel on the dash guages. It has dotted and pitted 'corrosion' damage.
Does anybody have a treatment for it, any sanding or polishing is not going to work.

 

[MikeSchinlaub]

The coating is physically chipping away. The only potential fix I can think of is sand it off and paint it.