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Auto merge of #16224 - servo:valid-fontface, r=upsuper

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Make the parser accept @font-face rules without font-family or src.

Fix #16165.

Also, it turns out that the CSSFontFaceRule IDL specified in the css-fonts spec is not web-compatible. Instead browsers implement a .style attribute like in CSSStyleRule: https://github.com/w3c/csswg-drafts/issues/825

This in turn requires preserving data about which descriptors were set or not (distinguishing unset from set to a value that happens to be the initial value), so this commit also makes every field `Option<_>`.

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This commit is contained in:
bors-servo 2017-04-03 03:53:09 -05:00 • committed by GitHub
commit fac0d17fd6
9 changed files with 240 additions and 197 deletions
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8
tests/wpt/metadata-css/css-conditional-3_dev/html/001.htm.ini
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@ -1,8 +0,0 @@
[001.htm]
type: testharness
[Inserting @font-face inside @supports works]
expected: FAIL
[Inserting an @supports inside a style rule should fail]
expected: FAIL