Switch dart:html objects not to be NativeFieldWrapper subclasses with JsInterop

tools/dom/scripts/systemnative.py

 #!/usr/bin/python
 # 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.
 
 """This module provides shared functionality for the systems to generate
 native binding from the IDL database."""
 
 import emitter
 import os
@@ skipping 498 matching lines @@
     template = None
     interface_name = self._interface.doc_js_name
     if interface_name == self._interface.id or not self._database.HasInterface(interface_name):
       template_file = 'impl_%s.darttemplate' % interface_name
       template = self._template_loader.TryLoad(template_file)
     if not template:
       template = self._template_loader.Load('dart_implementation.darttemplate')
     return template
 
   def RootClassName(self):
-    return 'NativeFieldWrapperClass2'
+    return 'DartHtmlDomObject'
 
   # This code matches up with the _generate_native_entry code in
   # dart_utilities.py in the dartium repository.  Any changes to this
   # should have matching changes on that end.
   def DeriveNativeEntry(self, name, kind, count):
     interface_id = self._interface.id
     database = self._database
     tag = ""
     if kind == 'Getter':
         tag = "%s_Getter" % name
@@ skipping 1504 matching lines @@
 
 def _IsCustom(op_or_attr):
   assert(isinstance(op_or_attr, IDLMember))
   return 'Custom' in op_or_attr.ext_attrs or 'DartCustom' in op_or_attr.ext_attrs
 
 def _IsCustomValue(op_or_attr, value):
   if _IsCustom(op_or_attr):
     return op_or_attr.ext_attrs.get('Custom') == value \
            or op_or_attr.ext_attrs.get('DartCustom') == value
   return False