Import wpt@3c8896ae408c8fd594979da7c99970029e7856a7

third_party/WebKit/LayoutTests/imported/wpt/fullscreen/api/element-ready-check-iframe-child-manual.html

Index: third_party/WebKit/LayoutTests/imported/wpt/fullscreen/api/element-ready-check-iframe-child-manual.html
diff --git a/third_party/WebKit/LayoutTests/imported/wpt/fullscreen/api/element-ready-check-iframe-child-manual.html b/third_party/WebKit/LayoutTests/imported/wpt/fullscreen/api/element-ready-check-iframe-child-manual.html
index 0c1dd29a1e642c39c0eb5d45b3e98b23f128d9cd..ab1c261ccc8afcb10a3cf451257a99bb8dd8c601 100644
--- a/third_party/WebKit/LayoutTests/imported/wpt/fullscreen/api/element-ready-check-iframe-child-manual.html
+++ b/third_party/WebKit/LayoutTests/imported/wpt/fullscreen/api/element-ready-check-iframe-child-manual.html
@@ -6,12 +6,15 @@
 <div id="log"></div>
 <iframe><!-- script inserts child here --></iframe>
 <script>
-async_test(function(t)
-{
-    var div = document.createElement("div");
-    document.querySelector("iframe").appendChild(div);
-    document.onfullscreenchange = t.unreached_func("fullscreenchange event");
-    document.onfullscreenerror = t.step_func_done();
-    trusted_request(div, document.body);
+async_test(t => {
+  const div = document.createElement("div");
+  document.querySelector("iframe").appendChild(div);
+
+  document.onfullscreenchange = t.step_func_done(() => {
+    assert_equals(document.fullscreenElement, div);
+  });
+  document.onfullscreenerror = t.unreached_func("fullscreenerror event");
+
+  trusted_request(div, document.body);
 });
 </script>