anchor.diff:    final String _message = "You are logged in. Please click the logout if you want logout from Google account.";
     localStorage _localStorage = new localStorage();
   
  -  bool get save_this_browser {
  -    return _localStorage.get(_key, _default);
  -  }
  +  bool _save_this_browser;
  +  bool get save_this_browser => _save_this_browser;
     set save_this_browser(bool value) {
  +    _save_this_browser = value;
       _localStorage.set(_key, value);
     }
   
     RememberMe() {
  +    _localStorage.get(_key, _default).then((value) {
  +      _save_this_browser = value;
  +    });
       RegExp dartString = new RegExp(r"\(dart\)");
       // workaround for https://code.google.com/p/dart/issues/detail?id=16215
       if (dartString.hasMatch(window.navigator.userAgent.toLowerCase())) {
  
positive.code:     return key;
    }
  
    dynamic get(dynamic key, dynamic default_value) {
      var value = _localStorage[_key(key)];
      if (value == null) {
        return default_value;
      } else {
        return JSON.decode(value);
      }
    }
  
    set(dynamic key, dynamic value) {
      _localStorage[_key(key)] = JSON.encode(value);
    }
  }
  
  
negative.code: library remember_me;
  
  import "dart:async";
  import "dart:convert";
  import "dart:html";
  import "dart:js";
  