Bug 1507486 [wpt PR 14072] - Automate one fullscreen test using `test_driver.bless`, a=testonly

Automatic update from web-platform-testsAutomate one fullscreen test using `test_driver.bless` (#14072)

Part of https://github.com/web-platform-tests/wpt/issues/7281.
--

wpt-commits: 39e6009b920f632e6c2fee6cd3d96418d677d04f
wpt-pr: 14072

testing/web-platform/tests/fullscreen/api/element-request-fullscreen.html

@@ -2,11 +2,14 @@
 <title>Element#requestFullscreen()</title>
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
-<script src="../trusted-click.js"></script>
+<script src="/resources/testdriver.js"></script>
+<script src="/resources/testdriver-vendor.js"></script>
 <div id="log"></div>
 <script>
 async_test(function(t)
 {
+    t.add_cleanup(() => { document.exitFullscreen() });
+
     var div = document.querySelector("div");
 
     document.addEventListener("fullscreenchange", t.step_func(function(event)
@@ -18,6 +21,7 @@ async_test(function(t)
         t.done();
     }));
 
-    trusted_request(t, div);
+    test_driver.bless("fullscreen", () => div.requestFullscreen())
+        .catch(t.step_func(assert_unreached));
 });
 </script>