Generate dart:html bindings for Dartium as well as Frog. All unittests now pass (or are disabled fo…

client/html/generated/html/frog/DOMTokenList.dart

+
+class _DOMTokenListImpl implements DOMTokenList native "*DOMTokenList" {
+
+  final int length;
+
+  void add(String token) native;
+
+  bool contains(String token) native;
+
+  String item(int index) native;
+
+  void remove(String token) native;
+
+  String toString() native;
+
+  bool toggle(String token) native;
+}