[Project_owners] Re: class vs contract ids

[Ben Bucksch]

Pete Collins wrote:

> In practicality though, the distinction is useless since there are 
> usually no alternative implementations found in Mozilla for the same 
> public interface.

Yes. But the text suggests that the intent is that you can e.g. override 
components. E.g. you can drop in another HTTPS implemntation, if you are 
on a high-latency satelite link.