On top of making the conversion, instead of using raw values in the test which can be hard
to parse when making changes, I converted the raw values back to domains and then use a helper
to convert it before passing it to the Map. I also removed the external files and stored the
values inside either head.js or within the test.
Differential Revision: https://phabricator.services.mozilla.com/D203226
6e3cc010a2