<!DOCTYPE html>
<html>
  <head>
    <title>Payment Request Testing</title>
    <meta content="text/html;charset=utf-8" http-equiv="Content-Type">
    <meta content="utf-8" http-equiv="encoding">
  </head>
  <body>
    <h1>blank page.html</h1>
    <script type="text/javascript">
      if(window.parent) {
        window.parent.postMessage("successful", '*');
      }
    </script>
  </body>
</html>
