getChromeExtensionStatus() does not follow the standard NodeJS conventions about getscreenid

[prbaron]

I realise it is quite opinionated in the way that it does not return a status but it will provide an error if the plugin is not installed and enabled.

Another solution could be

window.getChromeExtensionStatus = function(callback) {
    // for Firefox:
    if (!!navigator.mozGetUserMedia) {
      callback(null, 'not-chrome');
      return;
    }

    window.addEventListener('message', onIFrameCallback);

    function onIFrameCallback(event) {
      if (!event.data) return;

      if (event.data.chromeExtensionStatus) {
          callback(null, event.data.chromeExtensionStatus);
      }

      // this event listener is no more needed
      window.removeEventListener('message', onIFrameCallback);
    }

    setTimeout(postGetChromeExtensionStatusMessage, 100);
  };