Performance Timeline API

components/script/dom/webidls/PerformanceEntry.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/.
+ *
+ * The origin of this IDL file is
+ * https://w3c.github.io/performance-timeline/#the-performanceentry-interface
+ */
+
+[Exposed=(Window,Worker)]
+interface PerformanceEntry {
+  readonly attribute DOMString           name;
+  readonly attribute DOMString           entryType;
+  readonly attribute DOMHighResTimeStamp startTime;
+  readonly attribute DOMHighResTimeStamp duration;
+
+  // [Default] object toJSON();
+};