chrome.browserAction.onClicked.addListener(function(activeTab) {
  var closedTabs = [];
  chrome.tabs.query({}, function(tabs) {
    for (var i = 0; i < tabs.length; i++) {
      closedTabs.push(tabs[i]);
      //chrome.tabs.remove(tabs[i].id);
    }
    chrome.tabs.create({
      'url': chrome.extension.getURL('index.html')
    }, function(newTab) {
      chrome.tabs.onUpdated.addListener(function(tabId, changeInfo, tab) {
          if (newTab.id === tabId && changeInfo.status == 'complete') {
            chrome.runtime.sendMessage(closedTabs);
          }
      });
    });
  });
});