title: chrome showing status = canceled in network of developer tool
body: <p>In my app, I am loading two <code>iframe</code> simultaneously , namely <code>main-iframe</code> and <code>comment-iframe</code>,<code>comment-iframe</code> is visible to  the users only when <code>main-iframe</code> is loaded. once the <code>main-iframe</code> is loaded I changed the <code>src</code> attribute of <code>comment-iframe</code>. howerver sometimes,<code>main-iframe</code> keeps loading endlessly, with <code>status=cancel</code> message in <code>developer tool</code> of chrome.i also found this issue on safari as well.(this issue is not coming in firefox and IE)</p>
  
  <p>Thanks</p>