chrome.runtime.onInstalled.addListener(function() {
  chrome.declarativeContent.onPageChanged.removeRules(undefined, function() {
     chrome.declarativeContent.onPageChanged.addRules([
       {
         conditions: [
           new chrome.declarativeContent.PageStateMatcher({
             pageUrl: { schemes: ['http', 'https'] },
           })
         ],
        actions: [ new chrome.declarativeContent.ShowPageAction() ]
      }
    ]);
  });
});