[webkit-dev] Request for position: CSS @font-face descriptor advance-override

[Xiaocheng Hu]

Hi webkit-dev,

This is a request for WebKit's position on a new descriptor
'advance-override' of the CSS @font-face rule.

This is a new feature that the CSSWG just added into CSS Fonts Level 5 for
reducing layout shifting caused by web fonts. Chrome has already
implemented it in M90 behind a flag.

Explainer:
https://gist.github.com/xiaochengh/3aae8a97d1b0388c8e701819b63e2c49
Spec: https://drafts.csswg.org/css-fonts-5/#font-metrics-override-desc

May I assume https://github.com/w3c/csswg-drafts/pull/5991, authored by
Myles, as a positive signal?

Thank you!
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