Use fields in hidden native DOM classes instead of getters/setters.

client/dom/generated/src/frog/HTMLOptionElement.dart

 
 class _HTMLOptionElementJs extends _HTMLElementJs implements HTMLOptionElement native "*HTMLOptionElement" {
 
-  bool get defaultSelected() native "return this.defaultSelected;";
+  bool defaultSelected;
 
-  void set defaultSelected(bool value) native "this.defaultSelected = value;";
+  bool disabled;
 
-  bool get disabled() native "return this.disabled;";
+  final _HTMLFormElementJs form;
 
-  void set disabled(bool value) native "this.disabled = value;";
+  final int index;
 
-  _HTMLFormElementJs get form() native "return this.form;";
+  String label;
 
-  int get index() native "return this.index;";
+  bool selected;
 
-  String get label() native "return this.label;";
+  String text;
 
-  void set label(String value) native "this.label = value;";
-
-  bool get selected() native "return this.selected;";
-
-  void set selected(bool value) native "this.selected = value;";
-
-  String get text() native "return this.text;";
-
-  void set text(String value) native "this.text = value;";
-
-  String get value() native "return this.value;";
-
-  void set value(String value) native "this.value = value;";
+  String value;
 }