Generate binding code for VoidCallback.idl with code generator in python

Source/bindings/derived_sources.gyp

 #
 # 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 37 matching lines @@
       '<@(python_svg_idl_files)',
     ],
     'perl_and_python_idl_files': [
         '<@(deprecated_perl_idl_files)',
         '<@(python_idl_files)',
     ],
     'webcore_test_support_idl_files': [
         '<@(deprecated_perl_webcore_test_support_idl_files)',
         '<@(python_webcore_test_support_idl_files)',
     ],
+    'code_generator_template_files': [
+        'templates/callback.h',
+        'templates/callback.cpp',
+    ],
 
     'bindings_output_dir': '<(SHARED_INTERMEDIATE_DIR)/webkit/bindings',
     'generated_global_constructors_idl_files': [
          '<(SHARED_INTERMEDIATE_DIR)/WindowConstructors.idl',
          '<(SHARED_INTERMEDIATE_DIR)/WorkerGlobalScopeConstructors.idl',
          '<(SHARED_INTERMEDIATE_DIR)/SharedWorkerGlobalScopeConstructors.idl',
          '<(SHARED_INTERMEDIATE_DIR)/DedicatedWorkerGlobalScopeConstructors.idl',
     ],
 
     'conditions': [
@@ skipping 197 matching lines @@
           '<(DEPTH)/tools/idl_parser/idl_parser.py',
           'scripts/blink_idl_lexer.py',
           'scripts/blink_idl_parser.py',
           'scripts/code_generator_v8.py',
           'scripts/idl_definitions.py',
           'scripts/idl_definitions_builder.py',
           'scripts/idl_reader.py',
           'scripts/idl_validator.py',
           'scripts/interface_dependency_resolver.py',
           'scripts/IDLAttributes.txt',
+          '<@(code_generator_template_files)',
           # FIXME: If the dependency structure changes, we rebuild all files,
           # since we're not computing dependencies file-by-file in the build.
           '<(SHARED_INTERMEDIATE_DIR)/InterfaceDependencies.txt',
           # FIXME: Similarly, if any partial interface changes, rebuild
           # everything, since every IDL potentially depends on them, because
           # we're not computing dependencies file-by-file.
           '<!@pymod_do_main(list_idl_files_with_partial_interface <@(perl_and_python_idl_files))',
           # Generated IDLs are all partial interfaces, hence everything
           # potentially depends on them.
           '<@(generated_global_constructors_idl_files)',
@@ skipping 58 matching lines @@
           '../core/scripts/action_derivedsourcesallinone.py',
           '<(SHARED_INTERMEDIATE_DIR)/InterfaceDependencies.txt',
           '--',
           '<@(derived_sources_aggregate_files)',
         ],
         'message': 'Generating bindings derived sources',
       }],
     },
   ],
 }