[webkit-gtk] WebKitScriptWorld signal "window-object-cleared" never fires

[sami wagiaalla]

> That's wrong, you can't use the extensions API and the UI process API in
> the same process (we should probably generate a compile error in that
> case).
>

Gotcha!

> The web extensions API can only be used from a web process extension.
> For more information about web process extensions see:
>
> http://blogs.igalia.com/carlosgc/2013/09/10/webkit2gtk-web-process-extensions/
>

Great post! I understand how extensions work now. This complicates 
things a little for Eclipse, but I think I know what I need to do now.

Thanks a lot!
   Sami