Update the hr-time IDL file + test (web-platform-tests#11862)

Author: lukebjerring

hr-time/idlharness.any.js

@@ -0,0 +1,22 @@
+// META: global=window,worker
+// META: script=/resources/WebIDLParser.js
+// META: script=/resources/idlharness.js
+
+'use strict';
+
+// https://w3c.github.io/hr-time/
+
+idl_test(
+  ['hr-time'],
+  ['html', 'dom'],
+  async idl_array => {
+    if (self.GLOBAL.isWorker()) {
+      idl_array.add_objects({ WorkerGlobalScope: ['self'] });
+    } else {
+      idl_array.add_objects({ Window: ['self'] });
+    }
+    idl_array.add_objects({
+      Performance: ['performance'],
+    });
+  }
+);

hr-time/idlharness.html

@@ -1,17 +1,18 @@
 // GENERATED CONTENT - DO NOT EDIT
-// Content of this file was automatically extracted from the High Resolution Time spec.
-// See https://w3c.github.io/hr-time/
+// Content of this file was automatically extracted from the
+// "High Resolution Time Level 2" spec.
+// See: https://w3c.github.io/hr-time/
 
 typedef double DOMHighResTimeStamp;
 
 [Exposed=(Window,Worker)]
 interface Performance : EventTarget {
-    DOMHighResTimeStamp now ();
+    DOMHighResTimeStamp now();
     readonly attribute DOMHighResTimeStamp timeOrigin;
     [Default] object toJSON();
 };
 
-partial interface WindowOrWorkerGlobalScope {
+partial interface mixin WindowOrWorkerGlobalScope {
     [Replaceable]
     readonly    attribute Performance performance;
 };