There are no Mustella tests for Charts

Om/Alex:

> I am working on https://issues.apache.org/jira/browse/FLEX-33266. As a run
> up to it, I ran run mini_run.sh -all, let it run all the way through and
> then ran the MustellaDependencyDB app. It successfully creates the
> deps.xml. So far so good.
>
> I had a look at the deps and realized that there are no tests for any of
> the Chart classes.
>
> Is this a problem with the MustellaDependencyDB app or are there no
> Mustella test cases for Charts at all?
>
> I really hope it is the former
>
Hmm, I just poked through a couple of folders of scripts. I never noticed
that there weren't any mustella tests for charts. I'll try to find out how
they got tested.