chromium/chrome/test/data/extensions/api_test/webrequest/prerendering/initiator_new_tab.html

<!DOCTYPE html>
<html>
<head>
<script type="speculationrules">
{
  "prerender": [{
    "source": "list",
    "urls": ["prerendering_new_tab.html"],
    "target_hint": "_blank"
  }]
}
</script>
<title>Prerender Test</title>
</head>
<body><a href="prerendering_new_tab.html" target="_blank" id="link">link</a></body>
</html>