Reapply DOMFormData => FormData rename. (this time with a fix for Dartium)

lib/dom/dom.dart

Index: lib/dom/dom.dart
===================================================================
--- lib/dom/dom.dart	(revision 11534)
+++ lib/dom/dom.dart	(working copy)
@@ -27,6 +27,13 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
+class _DOMFormDataFactoryProvider {
+  factory DOMFormData([FormElement form]) => _dummy();
+}
+// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
 class _DOMParserFactoryProvider {
   factory DOMParser() => _dummy();
 }
@@ -1532,8 +1539,10 @@
 
 // WARNING: Do not edit - generated code.
 
-interface FormData {
+interface FormData default _FormDataFactoryProvider {
 
+  FormData([FormElement form]);
+
   void append(String name, String value, String filename);
 }