[Bindings][Refactoring] Make binding scripts use utilities to handle pickle files

third_party/WebKit/Source/bindings/scripts/idl_compiler.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.
 #     * Redistributions in binary form must reproduce the above
@@ skipping 19 matching lines @@
 # pylint: disable=W0403
 
 """Compile an .idl file to Blink V8 bindings (.h and .cpp files).
 
 Design doc: http://www.chromium.org/developers/design-documents/idl-compiler
 """
 
 import abc
 from optparse import OptionParser
 import os
-import cPickle as pickle
 import sys
 
 from code_generator_v8 import CodeGeneratorDictionaryImpl
 from code_generator_v8 import CodeGeneratorV8
 from code_generator_v8 import CodeGeneratorUnionType
 from code_generator_v8 import CodeGeneratorCallbackFunction
 from idl_reader import IdlReader
 from utilities import create_component_info_provider
 from utilities import read_idl_files_list_from_file
 from utilities import write_file
@@ skipping 138 matching lines @@
                                  input_filename)
         generate_union_type_containers(CodeGeneratorUnionType, options)
         generate_callback_function_impl(CodeGeneratorCallbackFunction, options)
     else:
         # |input_filename| should be a path of an IDL file.
         generate_bindings(CodeGeneratorV8, options, input_filename)
 
 
 if __name__ == '__main__':
     sys.exit(main())