Comment 135 for bug 294712

(In reply to Boris Zbarsky (:bz) from comment #130)
> Casting from a contact-gotten interface pointer to a concrete class is not
> ok.

I couldn't figure out a good way of getting to nsContenBlocker. Can you propose something else? I'd hate to have to create a nsIContenBlocker interface.

Aside from that, is including nsContentBlocker.h in nsContentUtils an issue?