Support descent-override, ascent-override

[oliviertassinari]

Describe the issue

Font supports a couple of interesting features: https://web.dev/css-size-adjust/#ascent-override: descent-override, ascent-override however the Google Font API doesn't allow to take advantage of them.

To Reproduce

See how in https://developers.google.com/fonts/docs/css2 there are no options.

Context

The Roboto font usually doesn't feel vertically aligned under its default setting, e.g. mui/material-ui#29965. It can need descent-override.

[eliheuer]

Thanks! I created a check in the Google Fonts QA system recently that looks for this kind of thing, so hopefully this will be less of an issue in the future.

It is not immediately clear to me why you can't customize descent-override with the Google Font CDN. A little bit more detail and context in this issue would help it move forward.

Maybe this is a dumb question, but why can't you do descent-override in the CSS independent of the Google Fonts API?

[oliviertassinari]

Maybe this is a dumb question, but why can't you do descent-override in the CSS independent of the Google Fonts API?

@eliheuer As I understand this CSS properties, it can only be added in the @font-face declaration but this one is owned by https://developers.google.com/fonts/docs/css2.