shadow_dom.html | Explore in Territory

<html>
<head>
<meta charset="utf8">
<title>Test Shadow DOM</title>
</head>
<body>
<p id="h1">
  Foo
  <span>Bar</span>
</p>
<div id="h2">
  <span>Bar</span>
</div>
<template shadowmode="foo" shadowdelegatesfocus="bar">
  To be removed
</template>
</body>
</html>

chromium/third_party/blink/renderer/core/testing/data/frameserialization/shadow_dom.html