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

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

Index: client/dom/generated/src/frog/HTMLProgressElement.dart
diff --git a/client/dom/generated/src/frog/HTMLProgressElement.dart b/client/dom/generated/src/frog/HTMLProgressElement.dart
index df387bd78f766572fea26cfa4c428607a4097a88..1fe6df5b2f68b27517ef4138400e84301608f38f 100644
--- a/client/dom/generated/src/frog/HTMLProgressElement.dart
+++ b/client/dom/generated/src/frog/HTMLProgressElement.dart
@@ -1,13 +1,17 @@
 
 class HTMLProgressElement extends HTMLElement native "*HTMLProgressElement" {
 
-  HTMLFormElement form;
+  HTMLFormElement get form() native "return this.form;";
 
-  NodeList labels;
+  NodeList get labels() native "return this.labels;";
 
-  num max;
+  num get max() native "return this.max;";
 
-  num position;
+  void set max(num value) native "this.max = value;";
 
-  num value;
+  num get position() native "return this.position;";
+
+  num get value() native "return this.value;";
+
+  void set value(num value) native "this.value = value;";
 }