Experiment with blocking script inside fragment-parser-inserted `<iframe srcdoc>`.

third_party/WebKit/Source/build/scripts/make_element_lookup_trie.py

 #!/usr/bin/env 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.
 #     * Redistributions in binary form must reproduce the above
@@ skipping 21 matching lines @@
 import in_generator
 import trie_builder
 import template_expander
 
 
 class ElementLookupTrieWriter(in_generator.Writer):
     # FIXME: Inherit all these from somewhere.
     defaults = {
         'JSInterfaceName': None,
         'constructorNeedsCreatedByParser': None,
+        'constructorNeedsCreatedByFragmentParser': None,
         'interfaceName': None,
         'noConstructor': None,
         'runtimeEnabled': None,
     }
     default_parameters = {
         'attrsNullNamespace': None,
         'export': '',
         'fallbackInterfaceName': '',
         'fallbackJSInterfaceName': '',
         'namespace': '',
@@ skipping 21 matching lines @@
     @template_expander.use_jinja('ElementLookupTrie.cpp.tmpl')
     def generate_implementation(self):
         return {
             'namespace': self._namespace,
             'length_tries': trie_builder.trie_list_by_str_length(self._tags)
         }
 
 
 if __name__ == '__main__':
     in_generator.Maker(ElementLookupTrieWriter).main(sys.argv)