Add [NoImplHeader] extended attribute

Source/bindings/scripts/compute_interfaces_info_overall.py

 #!/usr/bin/python
 #
 # 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.
@@ skipping 210 matching lines @@
             raise IdlInterfaceFileNotFoundError('Could not find the IDL file where the following implemented interface is defined: %s' % key_name)
         implemented_interfaces_full_paths = [
             implemented_interface_info['full_path']
             for implemented_interface_info in implemented_interfaces_info]
         # Implemented interfaces don't need includes, as this is handled in
         # the Blink implementation (they are implemented on |impl| itself,
         # hence header is included in implementing class).
         # However, they are needed for legacy implemented interfaces that
         # are being treated as partial interfaces, until we remove these.
         # http://crbug.com/360435
-        implemented_interfaces_include_paths = [
-            implemented_interface_info['include_path']
-            for implemented_interface_info in implemented_interfaces_info
-            if implemented_interface_info['is_legacy_treat_as_partial_interface']]
+        implemented_interfaces_include_paths = []
+        for implemented_interface_info in implemented_interfaces_info:
+            if (implemented_interface_info['is_legacy_treat_as_partial_interface'] and
+                implemented_interface_info['include_path']):
+                implemented_interfaces_include_paths.append(implemented_interface_info['include_path'])
 
         interface_info.update({
             'dependencies_full_paths': (partial_interfaces_full_paths +
                                         implemented_interfaces_full_paths),
             'dependencies_include_paths': (partial_interfaces_include_paths +
                                            implemented_interfaces_include_paths),
         })
 
     # Clean up temporary private information
     for interface_info in interfaces_info.itervalues():
@@ skipping 11 matching lines @@
     info_individuals = read_pickle_files(args)
 
     compute_interfaces_info_overall(info_individuals)
     write_pickle_file(interfaces_info_filename,
                       interfaces_info,
                       options.write_file_only_if_changed)
 
 
 if __name__ == '__main__':
     sys.exit(main())