Split Dictionary's get and convert into DictionaryHelper.

Source/bindings/scripts/v8_types.py

 # 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
 # copyright notice, this list of conditions and the following disclaimer
@@ skipping 274 matching lines @@
 # Includes
 ################################################################################
 
 def includes_for_cpp_class(class_name, relative_dir_posix):
     return set([posixpath.join('bindings', relative_dir_posix, class_name + '.h')])
 
 
 INCLUDES_FOR_TYPE = {
     'object': set(),
     'CompareHow': set(),
-    'Dictionary': set(['bindings/core/v8/Dictionary.h']),
+    'Dictionary': set(['bindings/core/v8/Dictionary.h',
+                       'bindings/core/v8/DictionaryHelper.h']),
     'EventHandler': set(['bindings/core/v8/V8AbstractEventListener.h',
                          'bindings/core/v8/V8EventListenerList.h']),
     'EventListener': set(['bindings/core/v8/BindingSecurity.h',
                           'bindings/core/v8/V8EventListenerList.h',
                           'core/frame/LocalDOMWindow.h']),
     'HTMLCollection': set(['bindings/core/v8/V8HTMLCollection.h',
                            'core/dom/ClassCollection.h',
                            'core/dom/TagCollection.h',
                            'core/html/HTMLCollection.h',
                            'core/html/HTMLFormControlsCollection.h',
@@ skipping 408 matching lines @@
 
 def literal_cpp_value(idl_type, idl_literal):
     """Converts an expression that is a valid C++ literal for this type."""
     # FIXME: add validation that idl_type and idl_literal are compatible
     literal_value = str(idl_literal)
     if idl_type.base_type in CPP_UNSIGNED_TYPES:
         return literal_value + 'u'
     return literal_value
 
 IdlType.literal_cpp_value = literal_cpp_value