Move [StrictTypeChecking] to interface (from members), where possible

Source/bindings/scripts/unstable/v8_attributes.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 41 matching lines @@
     if is_check_security_for_node:
         includes.add('bindings/v8/BindingSecurity.h')
     # [Custom]
     has_custom_getter = ('Custom' in extended_attributes and
                          extended_attributes['Custom'] in [None, 'Getter'])
     has_custom_setter = (not attribute.is_read_only and
                          'Custom' in extended_attributes and
                          extended_attributes['Custom'] in [None, 'Setter'])
 
     has_strict_type_checking = (
-        'StrictTypeChecking' in extended_attributes and
+        ('StrictTypeChecking' in extended_attributes or
+         'StrictTypeChecking' in interface.extended_attributes) and
         v8_types.is_interface_type(idl_type))
 
     is_setter_raises_exception = (
         'RaisesException' in extended_attributes and
         extended_attributes['RaisesException'] in [None, 'Setter'])
 
     # [Reflect]
     is_reflect = 'Reflect' in extended_attributes
     if is_reflect:
         includes.add('core/dom/custom/CustomElementCallbackDispatcher.h')
@@ skipping 300 matching lines @@
         property_attributes_list.append('v8::DontDelete')
     return property_attributes_list or ['v8::None']
 
 
 ################################################################################
 # Constructors
 ################################################################################
 
 def is_constructor_attribute(attribute):
     return attribute.idl_type.endswith('Constructor')