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

client/html/generated/html/frog/DocumentType.dart

+
+class _DocumentTypeImpl extends _NodeImpl implements DocumentType native "*DocumentType" {
+
+  final _NamedNodeMapImpl entities;
+
+  final String internalSubset;
+
+  final String name;
+
+  final _NamedNodeMapImpl notations;
+
+  final String publicId;
+
+  final String systemId;
+}