Minor unification with dart2js bindings.

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 453 matching lines @@
         if operation.type.id != 'void':
           template = '    if ($CHECKS) {\n      return $CALL;\n    }\n'
         else:
           template = '    if ($CHECKS) {\n      $CALL;\n      return;\n    }\n'
       else:
         if operation.type.id != 'void':
           template = '    return $CALL;\n'
         else:
           template = '    $CALL;\n'
 
-      overload_name = '%s_%s' % (operation.id, version[0])
+      overload_name = '_%s_%s' % (operation.id, version[0])
       version[0] += 1
       argument_list = ', '.join(parameter_names[:argument_count])
-      call = '_%s(%s)' % (overload_name, argument_list)
+      call = '%s(%s)' % (overload_name, argument_list)
       body.Emit(template, CHECKS=' && '.join(checks), CALL=call)
 
-      dart_declaration = '%s%s _%s(%s)' % (
+      dart_declaration = '%s%s %s(%s)' % (
           'static ' if operation.is_static else '',
           self.SecureOutputType(operation.type.id),
           overload_name, argument_list)
       cpp_callback_name = self._GenerateNativeBinding(
           overload_name, (0 if operation.is_static else 1) + argument_count,
           dart_declaration, 'Callback', False)
       self._GenerateOperationNativeCallback(operation, operation.arguments[:argument_count], cpp_callback_name)
 
     self._GenerateDispatcherBody(
         body,
@@ skipping 377 matching lines @@
         LIBRARY_NAME=library_name)
 
       headers = self._library_headers[library_name]
       for header_file in headers:
         path = os.path.relpath(header_file, output_dir)
         includes_emitter.Emit('#include "$PATH"\n', PATH=path)
         body_emitter.Emit(
             '    if (Dart_NativeFunction func = $CLASS_NAME::resolver(name, argumentCount))\n'
             '        return func;\n',
             CLASS_NAME=os.path.splitext(os.path.basename(path))[0])