Make DOMType the root of DOM implementation types.

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

 
-class NodeIteratorJS implements NodeIterator native "*NodeIterator" {
+class NodeIteratorJs extends DOMTypeJs implements NodeIterator native "*NodeIterator" {
 
   bool get expandEntityReferences() native "return this.expandEntityReferences;";
 
-  NodeFilterJS get filter() native "return this.filter;";
+  NodeFilterJs get filter() native "return this.filter;";
 
   bool get pointerBeforeReferenceNode() native "return this.pointerBeforeReferenceNode;";
 
-  NodeJS get referenceNode() native "return this.referenceNode;";
+  NodeJs get referenceNode() native "return this.referenceNode;";
 
-  NodeJS get root() native "return this.root;";
+  NodeJs get root() native "return this.root;";
 
   int get whatToShow() native "return this.whatToShow;";
 
   void detach() native;
 
-  NodeJS nextNode() native;
+  NodeJs nextNode() native;
 
-  NodeJS previousNode() native;
-
-  var dartObjectLocalStorage;
-
-  String get typeName() native;
+  NodeJs previousNode() native;
 }