Add font-face descriptors ascent-override, descent-override, and line-gap-override (#10052)
Add font-face descriptors ascent-override, descent-override, and line-gap-override (#10052)


mdn/browser-compat-data,mdn/browser-compat-data,chrisdavidmills/browser-compat-data,chrisdavidmills/browser-compat-data