Support basic immutable CSSOM

components/script/dom/webidls/CSSFontFaceRule.webidl

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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// https://drafts.csswg.org/css-fonts/#cssfontfacerule
+[Exposed=(Window,Worker)]
+interface CSSFontFaceRule : CSSRule {
+  // attribute DOMString family;
+  // attribute DOMString src;
+  // attribute DOMString style;
+  // attribute DOMString weight;
+  // attribute DOMString stretch;
+  // attribute DOMString unicodeRange;
+  // attribute DOMString variant;
+  // attribute DOMString featureSettings;
+};
+

components/script/dom/webidls/CSSGroupingRule.webidl

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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// https://drafts.csswg.org/cssom/#the-cssgroupingrule-interface
+[Exposed=(Window,Worker)]
+interface CSSGroupingRule : CSSRule {
+  // [SameObject] readonly attribute CSSRuleList cssRules;
+  // unsigned long insertRule(DOMString rule, unsigned long index);
+  // void deleteRule(unsigned long index);
+};
+

components/script/dom/webidls/CSSKeyframesRule.webidl

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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// https://drafts.csswg.org/css-animations/#interface-csskeyframesrule
+[Exposed=(Window,Worker)]
+interface CSSKeyframesRule : CSSRule {
+  //          attribute DOMString   name;
+  // readonly attribute CSSRuleList cssRules;
+
+  // void            appendRule(DOMString rule);
+  // void            deleteRule(DOMString select);
+  // CSSKeyframeRule? findRule(DOMString select);
+};

components/script/dom/webidls/CSSMediaRule.webidl

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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// https://drafts.csswg.org/cssom/#the-cssmediarule-interface
+[Exposed=(Window,Worker)]
+interface CSSMediaRule : CSSGroupingRule {
+  // [SameObject, PutForwards=mediaText] readonly attribute MediaList media;
+};

components/script/dom/webidls/CSSNamespaceRule.webidl

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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// https://drafts.csswg.org/cssom/#the-cssnamespacerule-interface
+[Exposed=(Window,Worker)]
+interface CSSNamespaceRule : CSSRule {
+  // readonly attribute DOMString namespaceURI;
+  // readonly attribute DOMString prefix;
+};

components/script/dom/webidls/CSSRule.webidl

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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// https://drafts.csswg.org/cssom/#the-cssrule-interface
+[Exposed=(Window,Worker)]
+interface CSSRule {
+  const unsigned short STYLE_RULE = 1;
+  const unsigned short CHARSET_RULE = 2; // historical
+  const unsigned short IMPORT_RULE = 3;
+  const unsigned short MEDIA_RULE = 4;
+  const unsigned short FONT_FACE_RULE = 5;
+  const unsigned short PAGE_RULE = 6;
+  const unsigned short MARGIN_RULE = 9;
+  const unsigned short NAMESPACE_RULE = 10;
+
+  readonly attribute unsigned short type;
+  attribute DOMString cssText;
+  // readonly attribute CSSRule? parentRule;
+  readonly attribute CSSStyleSheet? parentStyleSheet;
+};
+
+// https://drafts.csswg.org/css-animations/#interface-cssrule-idl
+partial interface CSSRule {
+    const unsigned short KEYFRAMES_RULE = 7;
+    const unsigned short KEYFRAME_RULE = 8;
+};
+
+// https://drafts.csswg.org/css-device-adapt/#css-rule-interface
+partial interface CSSRule {
+    const unsigned short VIEWPORT_RULE = 15;
+};
+

components/script/dom/webidls/CSSRuleList.webidl

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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// https://drafts.csswg.org/cssom/#cssrulelist
+// [LegacyArrayClass]
+[Exposed=(Window,Worker)]
+interface CSSRuleList {
+  getter CSSRule? item(unsigned long index);
+  readonly attribute unsigned long length;
+};

components/script/dom/webidls/CSSStyleRule.webidl

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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// https://drafts.csswg.org/cssom/#the-cssstylerule-interface
+[Exposed=(Window,Worker)]
+interface CSSStyleRule : CSSRule {
+  // attribute DOMString selectorText;
+  // [SameObject, PutForwards=cssText] readonly attribute CSSStyleDeclaration style;
+};

components/script/dom/webidls/CSSStyleSheet.webidl

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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// https://drafts.csswg.org/cssom/#the-cssstylesheet-interface
+[Exposed=(Window,Worker)]
+interface CSSStyleSheet : StyleSheet {
+  // readonly attribute CSSRule? ownerRule;
+  [SameObject] readonly attribute CSSRuleList cssRules;
+  // unsigned long insertRule(DOMString rule, unsigned long index);
+  // void deleteRule(unsigned long index);
+};

components/script/dom/webidls/CSSViewportRule.webidl

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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// https://drafts.csswg.org/css-device-adapt/#css-viewport-rule-interface
+[Exposed=(Window,Worker)]
+interface CSSViewportRule : CSSRule {
+    // readonly attribute CSSStyleDeclaration style;
+};