Comment 1 for bug 76833

We ship firefox as default browser and don't intend to change that, then it makes no sense to have to maintain the firefox and xulrunner code bases and to use extra space on the CD for xulrunner where firefox is already installed anyway. Doing extra split on firefox for gecko would probably make a real difference, the gecko package would ship most of the firefox package. I'm rejecting your feature request. If you want to discuss that feel free to do it on an ubuntu mailing list, that's a better media for a such topic