Bug 1526270 [wpt PR 15239] - Fix suppportedEntryTypes and PaintTiming IDLHarness tests, a=testonly

Automatic update from web-platform-tests
Fix suppportedEntryTypes and PaintTiming IDLHarness tests

Bug: 922195, 898769
Change-Id: I565daad1da5e64576c7c588f77be7f7ff2bb1a1f
Reviewed-on: https://chromium-review.googlesource.com/c/1452482
Reviewed-by: Yoav Weiss <yoavweiss@chromium.org>
Commit-Queue: Nicolás Peña Moreno <npm@chromium.org>
Cr-Commit-Position: refs/heads/master@{#629745}

--

wpt-commits: 362afa34cb1e73426c942b77b211d0972a5a9a8c
wpt-pr: 15239


--HG--
rename : testing/web-platform/tests/longtask-timing/supported-longtask-types.any.js => testing/web-platform/tests/longtask-timing/supported-longtask-types.window.js
rename : testing/web-platform/tests/navigation-timing/supported_navigation_type.any.js => testing/web-platform/tests/navigation-timing/supported_navigation_type.window.js
rename : testing/web-platform/tests/paint-timing/supported-paint-type.any.js => testing/web-platform/tests/paint-timing/supported-paint-type.window.js

testing/web-platform/tests/paint-timing/idlharness.window.js

@@ -19,6 +19,9 @@ idl_test(
         resolve();
       });
       observer.observe({ entryTypes: ['paint'] });
+      const div = document.createElement('div');
+      div.innerHTML = 'Hello World';
+      document.body.appendChild(div);
     });
     const timeout = new Promise((_, reject) => {
       t.step_timeout(() => reject('Timed out waiting for paint event'), 3000);