anchor.diff:      }
       
       save() {
  -      this.ownerDocument.cookie = Uri.encodeComponent(this.name) + '=' + Uri.decodeComponent(this.value) + this.prepareProperties();
  +      document.cookie = Uri.encodeComponent(this.name) + '=' + Uri.decodeComponent(this.value) + this.prepareProperties();
       }
     }
positive.code: 
  library polymer_elements.cookie;
  
  import 'package:polymer/polymer.dart';
  
    var EXPIRE_NOW = 'Thu, 01 Jan 1970 00:00:00 GMT';
  
negative.code:         prepared.write(expires);
        }
        
        if(secure) {
          prepared.write('; '); 
          prepared.write('secure=');
          prepared.write(secure);
        }
        
        if(maxAge != null) {
  