* Define urlbarMarginInline and urlbarSearchButtonWidth as CSS rather than preprocessor variables * Replace the urlbarViewPadding, urlbarViewFaviconWidth and urlbarViewIconMarginEnd preprocessor variables with CSS vars. * Remove %ifdefs around the license comment in these 2 files * Update ambiguous/out-of-date comment in the skeleton UI code Differential Revision: https://phabricator.services.mozilla.com/D135962