Add support in generate scripts to handle Conditional

Source/build/scripts/make_element_factory.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 29 matching lines @@
 class MakeElementFactoryWriter(MakeQualifiedNamesWriter):
     defaults = dict(MakeQualifiedNamesWriter.default_parameters, **{
         'JSInterfaceName': None,
         'constructorNeedsCreatedByParser': None,
         'constructorNeedsFormElement': None,
         'contextConditional': None,
         'interfaceName': None,
         'noConstructor': None,
         'noTypeHelpers': None,
         'runtimeEnabled': None,
+        'Conditional': None,

[Nils Barth (inactive), 2014/06/13 02:14:24]

nit: Capitalization: this should be lowercase, right?

[maheshkk, 2014/06/13 20:03:16]

I think it is capital C. Like below, these attributes are all "Conditional", and
as you know "defaults" needs to match attributes names. let me know if  you
think we should change all of them to "conditional" instead.

modules/EventTargetModulesFactory.in
25:modules/webaudio/AudioContext Conditional=WEB_AUDIO
26:modules/webaudio/AudioNode Conditional=WEB_AUDIO

[Nils Barth (inactive), 2014/06/16 06:27:52]

Thanks for explaining.
Looking at the .in files, upper/lower is inconsistent,
and having upper to match with extended attributes is fine,
thanks!

     })
     default_parameters = dict(MakeQualifiedNamesWriter.default_parameters, **{
         'fallbackInterfaceName': '',
         'fallbackJSInterfaceName': '',
     })
     filters = MakeQualifiedNamesWriter.filters
 
     def __init__(self, in_file_paths):
         super(MakeElementFactoryWriter, self).__init__(in_file_paths)
 
@@ skipping 59 matching lines @@
         if tag['JSInterfaceName']:
             return tag['JSInterfaceName']
         return self._interface(tag)
 
     def _has_js_interface(self, tag):
         return not tag['noConstructor'] and self._js_interface(tag) != ('%sElement' % self.namespace)
 
 
 if __name__ == "__main__":
     in_generator.Maker(MakeElementFactoryWriter).main(sys.argv)