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<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <title>Bug 1379762</title>
  </head>
  <img srcset> <!-- This tries to add load blockers during bfcache restoration -->
  <script>
    onunload = null; // enable bfcache
    var bc = new BroadcastChannel('bug1379762');
    bc.postMessage("init"); 
    onpageshow = function() {
      bc.onmessage = (messageEvent) => {
        let message = messageEvent.data;
        if (message == "forward_back") {
          // Navigate forward and then back.
          // eslint-disable-next-line no-global-assign
          setTimeout(function() { location = "goback.html"; }, 0);
        } else if (message == "finish_test") {
          // Do this async so our load event gets a chance to fire if it plans to
          // do it.
          setTimeout(function() {
            bc.postMessage("finished");
            bc.close();
            window.close();
          });
        }
      }
      bc.postMessage("increment_testCount");
    };
    onload = function() {
      bc.postMessage("increment_loadCount");
    };
  </script>
</html>