Neither i'd imagine (it all depends on how it will be used. If its being used as an extension it should be an extension), there are plenty of things in gerrit which are neither extensions nor core (for example things under wikimedia/ or tools/. In the svn days we used to have an "art" repo for source files for images used in mw. Not sure if we still have it.)

--bawolff
On May 30, 2014 7:12 AM, "Prateek Saxena" <psaxena@wikimedia.org> wrote:
>
> On Fri, May 30, 2014 at 4:34 PM, Brian Wolff <bawolff@gmail.com> wrote:
> > Ugh. Why is that in an external repo and not in gerrit.
>
> I'll talk to May, get this onto Gerrit and see if it can be deployed.
> Will this have to be structured as an extension? Or would it go into
> core?
>
> —prtksxna
>
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