file_remote_frame.html

Enable keyboard shortcuts

<!DOCTYPE>

<html>

  <head>

    <meta charset="utf-8">

    <script>

      "use strict";

      var response = {

        tabs: false,

        cookie: document.cookie,

};

      try {

        browser.tabs.create({url: "file_sample.html"});

        response.tabs = true;

      } catch (e) {

        // ok

      window.parent.postMessage(response, "*");

    </script>

  </head>

</html>