The 'from-font' value is newly added to CSS Font Module Level 5 [1], which allows the browser to automatically decide a font-size-value based on the primary font. We implement it here. [1] https://www.w3.org/TR/css-fonts-5/#valdef-font-size-adjust-from-font
Pull request: https://github.com/WebKit/WebKit/pull/12303
<rdar://problem/107735982>
Committed 262800@main (0f2621d76216): <https://commits.webkit.org/262800@main> Reviewed commits have been landed. Closing PR #12303 and removing active labels.