data () {
 return {
     bookmarks: {
        loading: false,
        data: []
     }
},
methods: {
 setBookmarks () {
    this.bookmarks.loading = true;
   chrome.bookmarks.getTree((bookmarkTree) => {
                    this.bookmarks.data = bookmarkTree;
                    this.bookmarks.loading = false;
  }
},
created () {
 this.setBookmarks();
}
}