Codebase Browser
chromium
Go to App

chromium/third_party/blink/web_tests/external/wpt/acid/acid3/xhtml.3 

<html xmlns="http://www.w3.org/1999/xhtml#">
 <head>
  <title>Test</title>
 </head>
 <body>
  <p> <strong> Namespace Test </strong> </p>
  <script type="text/javascript">
   parent.notify("xhtml.3")
  </script>
 </body>
</html>