Add HTMLImports features flag.

Source/core/scripts/make_runtime_features.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 48 matching lines @@
             enabled_condition = "is%sEnabled" % feature['name']
             for dependant_name in feature['depends_on']:
                 enabled_condition += " && is%sEnabled" % dependant_name
             feature['enabled_condition'] = enabled_condition
         self._non_custom_features = filter(lambda feature: not feature['custom'], self._features)
 
     def _lower_first(self, string):
         lowered = string[0].lower() + string[1:]
         lowered = lowered.replace("cSS", "css")
         lowered = lowered.replace("iME", "ime")
+        lowered = lowered.replace("hTML", "html")
         return lowered
 
     def _feature_sets(self):
         # Another way to think of the status levels is as "sets of features"
         # which is how we're referring to them in this generator.
         return self.valid_values['status']
 
     def generate_header(self):
         return {
             'features': self._features,
             'feature_sets': self._feature_sets(),
         }
 
     def generate_implementation(self):
         return {
             'features': self._features,
             'feature_sets': self._feature_sets(),
         }
 
 
 if __name__ == "__main__":
     in_generator.Maker(RuntimeFeatureWriter).main(sys.argv)