Everywhere: Hoist the Libraries folder to the top-level

Author: https://github.com/trflynn89
Commit: 93712b24bf
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/2256
Reviewed-by: https://github.com/sideshowbarker

Libraries/LibWeb/CSS/CSSStyleSheet.idl

@@ -0,0 +1,29 @@
+#import <CSS/CSSRule.idl>
+#import <CSS/CSSRuleList.idl>
+#import <CSS/MediaList.idl>
+#import <CSS/StyleSheet.idl>
+
+// https://drafts.csswg.org/cssom/#cssstylesheet
+[Exposed=Window]
+interface CSSStyleSheet : StyleSheet {
+    constructor(optional CSSStyleSheetInit options = {});
+
+    readonly attribute CSSRule? ownerRule;
+    [SameObject] readonly attribute CSSRuleList cssRules;
+    unsigned long insertRule(CSSOMString rule, optional unsigned long index = 0);
+    undefined deleteRule(unsigned long index);
+
+    Promise<CSSStyleSheet> replace(USVString text);
+    undefined replaceSync(USVString text);
+
+    // https://drafts.csswg.org/cssom/#legacy-css-style-sheet-members
+    [SameObject, ImplementedAs=css_rules] readonly attribute CSSRuleList rules;
+    long addRule(optional DOMString selector = "undefined", optional DOMString style = "undefined", optional unsigned long index);
+    undefined removeRule(optional unsigned long index);
+};
+
+dictionary CSSStyleSheetInit {
+    DOMString baseURL = null;
+    (MediaList or DOMString) media = "";
+    boolean disabled = false;
+};