MediaStream/Source fix

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 115 matching lines @@
 _cpp_import_map = {
   'ImageBitmapFactories' : 'modules/imagebitmap/ImageBitmapFactories',
   'ScreenOrientation' : 'modules/screen_orientation/ScreenOrientation'
 }
 
 _cpp_overloaded_callback_map = {
   ('DOMURL', 'createObjectUrlFromSourceCallback'): 'URLMediaSource',
   ('DOMURL', 'createObjectUrlFromStreamCallback'): 'URLMediaStream',
   ('DOMURL', '_createObjectUrlFromWebKitSourceCallback'): 'URLMediaSource',
   ('DOMURL', '_createObjectURL_2Callback'): 'URLMediaSource',
-  ('DOMURL', '_createObjectURL_3Callback'): 'URLMediaSource',
-  ('DOMURL', '_createObjectURL_4Callback'): 'URLMediaStream',
+  ('DOMURL', '_createObjectURL_3Callback'): 'URLMediaStream',
 }
 
 _cpp_partial_map = {}
 
 _cpp_no_auto_scope_list = set([
   ('Document', 'body', 'Getter'),
   ('Document', 'getElementById', 'Callback'),
   ('Document', 'getElementsByName', 'Callback'),
   ('Document', 'getElementsByTagName', 'Callback'),
   ('Element', 'getAttribute', 'Callback'),
@@ skipping 1634 matching lines @@
     e.Emit("};\n");
     e.Emit('\n');
     e.Emit('} // namespace WebCore\n');
 
 def _IsOptionalStringArgumentInInitEventMethod(interface, operation, argument):
   return (
       interface.id.endswith('Event') and
       operation.id.startswith('init') and
       argument.ext_attrs.get('Default') == 'Undefined' and
       argument.type.id == 'DOMString')