<!DOCTYPE html>
<html>
<head>
<script>
if (window.testRunner)
    testRunner.dumpAsText();

onload = function() {
    document.execCommand('SelectAll');
    document.execCommand('JustifyCenter');
    document.body.textContent = 'PASS if Blink doesn\'t crash.';
};
</script>
</head>
<body contenteditable="true"> 
<kbd>foo</kbd>
<sup>bar<abbr contenteditable="false">baz</abbr></sup>
</body>
</html>