chromium/third_party/blink/web_tests/fast/forms/select-popup/popup-menu-move-after-open.html

<!DOCTYPE html>
<title>Test popup menu positioned correctly after layout change</title>
<script src="../../../resources/testdriver.js"></script>
<script src="../../../resources/testdriver-vendor.js"></script>
<script src='../resources/picker-common.js'></script>

<div id="err" style="height:50px; display:block">
  Test select popup positions correctly after an event causes update to select element positioning.
</div>
<select id="menu">
    <option value="one">One</option>
    <option value="two">Two</option>
</select>
<script>
  if (window.testRunner) {
    testRunner.waitUntilDone();
  }

  function startTest() {
    err.style.display = 'none';
    if (window.testRunner){
      testRunner.notifyDone();
    }
  }

  openPickerDeprecatedJsTest(menu, startTest);
</script>