Reland: Generate separate files for union type containers

third_party/WebKit/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 68 matching lines @@
 code changes (for inherited extended attributes).
 
 Design doc: http://www.chromium.org/developers/design-documents/idl-build
 """
 
 from collections import defaultdict
 import cPickle as pickle
 import optparse
 import sys
 
-from utilities import idl_filename_to_component, read_pickle_files, write_pickle_file, merge_dict_recursively
+from utilities import idl_filename_to_component, read_pickle_files, write_pickle_file, merge_dict_recursively, shorten_union_name
 
 INHERITED_EXTENDED_ATTRIBUTES = set([
     'ActiveScriptWrappable',
     'DependentLifetime',
 ])
 
 # Main variable (filled in and exported)
 interfaces_info = {}
 
 # Auxiliary variables (not visible to future build steps)
@@ skipping 180 matching lines @@
             else:
                 dependencies_other_component_full_paths.append(full_path)
 
         for include_path in partial_interfaces_include_paths:
             partial_interface_component = idl_filename_to_component(include_path)
             if component == partial_interface_component:
                 dependencies_include_paths.append(include_path)
             else:
                 dependencies_other_component_include_paths.append(include_path)
 
-        if interface_info['has_union_types']:
+        for union_type in interface_info.get('union_types', []):
+            name = shorten_union_name(union_type)
             dependencies_include_paths.append(
-                'bindings/%s/v8/UnionTypes%s.h' % (component, component.capitalize()))
+                'bindings/%s/v8/%s.h' % (component, name))
 
         interface_info.update({
             'dependencies_full_paths': dependencies_full_paths,
             'dependencies_include_paths': dependencies_include_paths,
             'dependencies_other_component_full_paths':
                 dependencies_other_component_full_paths,
             'dependencies_other_component_include_paths':
                 dependencies_other_component_include_paths,
         })
 
     # Clean up temporary private information
     for interface_info in interfaces_info.itervalues():
         del interface_info['extended_attributes']
-        del interface_info['has_union_types']
+        del interface_info['union_types']
         del interface_info['is_legacy_treat_as_partial_interface']
 
     # Compute global_type_info to interfaces_info so that idl_compiler does
     # not need to always calculate the info in __init__.
     compute_global_type_info()
 
 
 ################################################################################
 
 def main():
     options, args = parse_options()
     # args = Input1, Input2, ..., Output
     interfaces_info_filename = args.pop()
     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())