Change _internal from private so we work across library boundaries

tools/dom/scripts/systemhtml.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 system to generate
 Dart:html APIs from the IDL database."""
 
 import emitter
 import logging
@@ skipping 583 matching lines @@
     if interface_name == 'ClientRect' or interface_name == 'DomRectReadOnly':
         js_interop_equivalence_op = ''
 
     js_interop_wrapper = '''
 
   static {0} internalCreate{0}() {{
     return new {0}._internalWrap();
   }}
 
   factory {0}._internalWrap() {{
-    return new {0}._internal();
+    return new {0}.internal_();
   }}
 
-  {0}._internal() : super._internal();
+  {0}.internal_() : super.internal_();
 
 '''.format(class_name)
     """
     TODO(terry): Don't use Dart expando really don't need.
       final Object expandoJsObject = new Object();
       final Expando<JsObject> dartium_expando = new Expando<JsObject>("Expando_jsObject");
     """
     if base_class == 'NativeFieldWrapperClass2':
         js_interop_wrapper = '''
   static {0} internalCreate{0}() {{
     return new {0}._internalWrap();
   }}
 
   JsObject blink_jsObject = null;
 
   factory {0}._internalWrap() {{
-    return new {0}._internal();
+    return new {0}.internal_();
   }}
 
-  {0}._internal() {{ }}
+  {0}.internal_() {{ }}
 
 {1}'''.format(class_name, js_interop_equivalence_op)
         # Change to use the synthesized class so we can construct with a mixin
         # classes prefixed with name of NativeFieldWrapperClass don't have a
         # default constructor so classes with mixins can't be new'd.
         if (self._options.templates._conditions['DARTIUM'] and
             self._options.dart_js_interop and
             (self._interface.id == 'NamedNodeMap' or
              self._interface.id == 'CSSStyleDeclaration')):
             base_class = 'JsoNativeFieldWrapper2'
@@ skipping 732 matching lines @@
 
   def AddFile(self, basename, library_name, path):
     self._libraries[library_name].AddFile(path)
 
   def AddTypeEntry(self, library_name, idl_name, dart_name):
     self._libraries[library_name].AddTypeEntry(idl_name, dart_name)
 
   def Emit(self, emitter, auxiliary_dir):
     for lib in self._libraries.values():
       lib.Emit(emitter, auxiliary_dir)