Add [DoNotGenerateClassBindings] extended attribute

Source/bindings/scripts/code_generator_v8.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 115 matching lines @@
             generate_contents = v8_interface.generate_interface
         header_template = self.jinja_env.get_template(header_template_filename)
         cpp_template = self.jinja_env.get_template(cpp_template_filename)
 
         # Generate contents (input parameters for Jinja)
         template_contents = generate_contents(interface)
 
         # Add includes for interface itself and any dependencies
         interface_info = self.interfaces_info[interface_name]
         template_contents['header_includes'].add(interface_info['include_path'])
+        if not template_contents['has_class_bindings']:
+            template_contents['header_includes'].add(
+                'V8%s.h' % interface_info['implemented_as'])
         template_contents['header_includes'] = sorted(template_contents['header_includes'])
         includes.update(interface_info.get('dependencies_include_paths', []))
         template_contents['cpp_includes'] = sorted(includes)
 
         # Render Jinja templates
         header_text = header_template.render(template_contents)
         cpp_text = cpp_template.render(template_contents)
         return header_text, cpp_text
 
 
@@ skipping 55 matching lines @@
 
     # Create a dummy file as output for the build system,
     # since filenames of individual cache files are unpredictable and opaque
     # (they are hashes of the template path, which varies based on environment)
     with open(dummy_filename, 'w') as dummy_file:
         pass  # |open| creates or touches the file
 
 
 if __name__ == '__main__':
     sys.exit(main(sys.argv))