chromium/third_party/blink/web_tests/editing/execCommand/indent-images.html

<body contenteditable><img><img><script src="../../resources/dump-as-markup.js"></script><script>

if (window.testRunner)
    testRunner.dumpAsText();

while (script = document.querySelector('script'))
    script.parentNode.removeChild(script);

getSelection().collapse(document.body, 2);
document.execCommand('indent');

Markup.description('This test indents insides a document with exactly two image elements.');
Markup.dump(document.body);

</script></body>