Move frog dart:dom from fields to getters/setters.

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

 
 class HTMLOutputElement extends HTMLElement native "*HTMLOutputElement" {
 
-  String defaultValue;
+  String get defaultValue() native "return this.defaultValue;";
 
-  HTMLFormElement form;
+  void set defaultValue(String value) native "this.defaultValue = value;";
 
-  DOMSettableTokenList htmlFor;
+  HTMLFormElement get form() native "return this.form;";
 
-  NodeList labels;
+  DOMSettableTokenList get htmlFor() native "return this.htmlFor;";
 
-  String name;
+  void set htmlFor(DOMSettableTokenList value) native "this.htmlFor = value;";
 
-  String type;
+  NodeList get labels() native "return this.labels;";
 
-  String validationMessage;
+  String get name() native "return this.name;";
 
-  ValidityState validity;
+  void set name(String value) native "this.name = value;";
 
-  String value;
+  String get type() native "return this.type;";
 
-  bool willValidate;
+  String get validationMessage() native "return this.validationMessage;";
+
+  ValidityState get validity() native "return this.validity;";
+
+  String get value() native "return this.value;";
+
+  void set value(String value) native "this.value = value;";
+
+  bool get willValidate() native "return this.willValidate;";
 
   bool checkValidity() native;
 
   void setCustomValidity(String error) native;
 }