focus_blur_test.html | Explore in Territory

<html>
<head>
<title>No blur test</title>
<!-- This simple page indicates whether or not this page ever loses focus. -->
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
</head>
<body>
  <p id="result">PASS</p>
</body>
<script>
window.onblur = function() {
  document.getElementById("result").innerHTML = "FAIL";
};
</script>
</html>

chromium/chrome/test/data/chromedriver/focus_blur_test.html