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

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

Index: client/dom/generated/src/frog/TreeWalker.dart
diff --git a/client/dom/generated/src/frog/TreeWalker.dart b/client/dom/generated/src/frog/TreeWalker.dart
index 26d4229ffedd6946e4f734d43422f4bb153174a4..98cc68410624ff7a02b072fb5796989ff5e337e4 100644
--- a/client/dom/generated/src/frog/TreeWalker.dart
+++ b/client/dom/generated/src/frog/TreeWalker.dart
@@ -1,15 +1,17 @@
 
 class TreeWalker native "*TreeWalker" {
 
-  Node currentNode;
+  Node get currentNode() native "return this.currentNode;";
 
-  bool expandEntityReferences;
+  void set currentNode(Node value) native "this.currentNode = value;";
 
-  NodeFilter filter;
+  bool get expandEntityReferences() native "return this.expandEntityReferences;";
 
-  Node root;
+  NodeFilter get filter() native "return this.filter;";
 
-  int whatToShow;
+  Node get root() native "return this.root;";
+
+  int get whatToShow() native "return this.whatToShow;";
 
   Node firstChild() native;