IDL: Generate union type containers

Source/core/core.gyp

 #
 # Copyright (C) 2009 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 182 matching lines @@
       ],
       'include_dirs': [
         '<@(webcore_include_dirs)',
       ],
       'sources': [
         # FIXME: should be bindings_core_v8_files http://crbug.com/358074
         '<@(bindings_core_v8_files)',
         # These files include all the .cpp files generated from the .idl files
         # in webcore_files.
         '<@(bindings_core_v8_generated_aggregate_files)',
+        '<@(bindings_core_v8_generated_union_type_files)',
 
         # Additional .cpp files for HashTools.h
         '<(blink_core_output_dir)/CSSPropertyNames.cpp',
         '<(blink_core_output_dir)/CSSValueKeywords.cpp',
 
         # Additional .cpp files from make_core_generated actions.
         '<(blink_core_output_dir)/Event.cpp',
         '<(blink_core_output_dir)/EventHeaders.h',
         '<(blink_core_output_dir)/EventNames.cpp',
         '<(blink_core_output_dir)/EventNames.h',
@@ skipping 571 matching lines @@
         '<(bindings_core_v8_output_dir)/V8RefCountedScriptWrappable.h',
         '<(bindings_core_v8_output_dir)/V8InternalDictionary.cpp',
         '<(bindings_core_v8_output_dir)/V8InternalDictionary.h',
       ],
       'sources/': [
         ['exclude', 'testing/js'],
       ],
     },
   ],  # targets
 }