bindings: Moves [OverrideBuiltins]'s attributes to the prototype chain.

Source/bindings/scripts/v8_utilities.py

 # Copyright (C) 2013 Google Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 # copyright notice, this list of conditions and the following disclaimer
@@ skipping 443 matching lines @@
     # Note that ExposeJSAccessors and DoNotExposeJSAccessors are more powerful
     # than 'static', [Unforgeable] and [OverrideBuiltins].
     if 'ExposeJSAccessors' in member.extended_attributes:
         return True
     if 'DoNotExposeJSAccessors' in member.extended_attributes:
         return False
 
     # These members must not be placed on prototype chains.
     if (is_constructor_attribute(member) or
             member.is_static or
-            is_unforgeable(interface, member) or
-            'OverrideBuiltins' in interface.extended_attributes):
+            is_unforgeable(interface, member)):
         return False
 
     # TODO(yukishiino): We should handle [Global] and [PrimaryGlobal] instead of
     # Window.
     if (interface.name == 'Window'):
         return member.idl_type.name == 'EventHandler'
 
     if 'ExposeJSAccessors' in interface.extended_attributes:
         return True
     if 'DoNotExposeJSAccessors' in interface.extended_attributes:
@@ skipping 112 matching lines @@
     except StopIteration:
         return None
 
 
 IdlInterface.indexed_property_getter = property(indexed_property_getter)
 IdlInterface.indexed_property_setter = property(indexed_property_setter)
 IdlInterface.indexed_property_deleter = property(indexed_property_deleter)
 IdlInterface.named_property_getter = property(named_property_getter)
 IdlInterface.named_property_setter = property(named_property_setter)
 IdlInterface.named_property_deleter = property(named_property_deleter)