text: chrome.runtime.onInstalled.addListener(function() {
  
      chrome.declarativeContent.onPageChanged.removeRules(undefined, function() {
          chrome.declarativeContent.onPageChanged.addRules([{
              conditions: [
                  new chrome.declarativeContent.PageStateMatcher({
                      pageUrl: { hostEquals: 'israelcoronamap.co.il' },
                  })
              ],
              actions: [new chrome.declarativeContent.ShowPageAction()]
          }]);
      });
  });