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script: Implement CSSStyleSheet.replace (#38244)

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Implement `CSSStyleSheet.replace`
[#dom-cssstylesheet-replace](https://drafts.csswg.org/cssom/#dom-cssstylesheet-replace)
with disallow modification flag
[#concept-css-style-sheet-disallow-modification-flag](https://drafts.csswg.org/cssom/#concept-css-style-sheet-disallow-modification-flag).

Basically it would behave like `replaceSync`, but we are running it
asynchronously.

Testing: Existing WPT coverage.
Part of: https://github.com/servo/servo/issues/36162

---------

Signed-off-by: Jo Steven Novaryo <jo.steven.novaryo@huawei.com>
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Jo Steven Novaryo 2025-07-25 11:05:22 +08:00 • committed by GitHub
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5 changed files with 92 additions and 19 deletions
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components/script_bindings/webidls/CSSStyleSheet.webidl
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@ -11,6 +11,8 @@ interface CSSStyleSheet : StyleSheet {
[Throws, SameObject] readonly attribute CSSRuleList cssRules;
[Throws] unsigned long insertRule(DOMString rule, optional unsigned long index = 0);
[Throws] undefined deleteRule(unsigned long index);
[Throws] Promise<CSSStyleSheet> replace(USVString text);
[Throws] undefined replaceSync(USVString text);
};