title: Chrome: net::ERR_INSECURE_RESPONSE when using corsproxy over HTTPS
body: <p><strong>I have:</strong></p>
  
  <ol>
  <li>Registered my app to work with some social network (register <code>https://xxx.heroku.com</code> in social network)</li>
  <li>Send AJAX request via corsproxy (to bypass Cross Domain restrictions), which do the request to the social netwrok I has registered on:</li>
  </ol>
  
  <p><strong>Code:</strong></p>
  
  <pre><code>var url = 'cs7-3v4.vk-cdn.net/p17/3f4da74425b00a.mp3?extra=X-fxNwlLKifZltRpJxs4b1XSq0k3NKlSzq3Qse9WG18gWOT_OmO9tCMr9-u3ZhnEmqk4XUxlG55fB18HYpBDcXP3TixE1FKu';
  $.get('https://www.corsproxy.com/' + url, function(response) {
      document.body.innerHTML = response;
  });  
  </code></pre>
  
  <p><strong>Problem:</strong> Got <code>net::ERR_INSECURE_RESPONSE</code>.</p>
  
  <p><strong>Question:</strong> <em>If I changed <code>https://xxx.heroku.com</code> to <code>http://xxx.heroku.com</code> would it fix an issue?</em></p>