chromium/chrome/test/data/chrome_extension_resource.html

<html>
<head>
<script>
var xhrStatus = -1;
// An icon in the simple_with_icon test extension.
var imgUrl = 'chrome-extension://ombfbiolafbecdcaofoilglhmobpdbnd/icon.png';

window.onload = function() {
  // The call to pushState with chrome-extension:// URL will succeed, since the
  // test uses --disable-web-security.
  history.pushState('', '',
      'chrome-extension://ombfbiolafbecdcaofoilglhmobpdbnd/');
  var xhr = new XMLHttpRequest();
  xhr.onreadystatechange = function() {
    if (xhr.readyState == 4) {
      xhrStatus = xhr.status;
      if (xhrStatus == 200) {
        document.getElementById('star').src =
            window.URL.createObjectURL(this.response);
      }
      domAutomationController.send(xhr.status);
    }
  }
  xhr.open('GET', imgUrl);
  xhr.responseType = 'blob';
  xhr.send();
}
</script>
</head>
<body>
<img id='star'>
</body>
</html>