Sadly Chromium is WAYYYY easier to development on than Firefox. Had Mozilla spent effort making the base of it as a framework in the same way Chromium is, they may have considered it.
There is a reason why Electron, QT etc use Chromium.
There is a reason why Electron, QT etc use Chromium.
Firefox is comparable in that department.
What magic are you using to be able to build Chromium?
I get the Electron reason...it just sucks.