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/PerformanceTimeline/PerformanceObserver.idl

@@ -0,0 +1,26 @@
+#import <PerformanceTimeline/PerformanceObserverEntryList.idl>
+
+// https://w3c.github.io/performance-timeline/#dom-performanceobservercallbackoptions
+dictionary PerformanceObserverCallbackOptions {
+    unsigned long long droppedEntriesCount;
+};
+
+callback PerformanceObserverCallback = undefined (PerformanceObserverEntryList entries, PerformanceObserver observer, optional PerformanceObserverCallbackOptions options = {});
+
+// https://w3c.github.io/performance-timeline/#dom-performanceobserverinit
+dictionary PerformanceObserverInit {
+    sequence<DOMString> entryTypes;
+    DOMString type;
+    boolean buffered;
+};
+
+// https://w3c.github.io/performance-timeline/#dom-performanceobserver
+[Exposed=(Window,Worker)]
+interface PerformanceObserver {
+    constructor(PerformanceObserverCallback callback);
+    undefined observe(optional PerformanceObserverInit options = {});
+    undefined disconnect();
+    PerformanceEntryList takeRecords();
+    // FIXME: [SameObject] static readonly attribute FrozenArray<DOMString> supportedEntryTypes;
+    [SameObject] static readonly attribute any supportedEntryTypes;
+};