code: function resetOptionsForActiveTab() {
    var url = getCanonicalUrl(tabs.activeTab.url);
    setPagePreference(url, 'options', '');
    if (isInjectionEnabledForUrl(url)) {
      disableInjectionForUrl(url, true);
      enableInjectionForUrl(url);
    }
  }
docs: Resets WTF options for the currently active tab URL.