chromium/third_party/blink/web_tests/fast/dom/HTMLAnchorElement/remove-and-add-href-from-focused-anchor.html

<!DOCTYPE html>
<body>
<a href="javascript:" id="target">link</a>
<script src="../../../resources/js-test.js"></script>
<script>
jsTestIsAsync = true;
var target = document.getElementById('target');
target.focus();
shouldBe('document.activeElement', 'target');
debug('Remove href.');
window.onload = function() {
    target.removeAttribute('href');
    document.body.offsetTop;
    target.href = 'http://example.com/';
    target.focus();
    setTimeout(function() {
        shouldBe('document.activeElement', 'target');
        target.remove();
        finishJSTest();
    }, 10);
};
</script>
</body>