bindings: Reduces the binary size by reducing # of callback functions.

Source/bindings/scripts/v8_attributes.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 123 matching lines @@
         'reflect_missing': extended_attributes.get('ReflectMissing'),
         'reflect_only': extended_attribute_value_as_list(attribute, 'ReflectOnly'),
         'runtime_enabled_function': v8_utilities.runtime_enabled_function_name(attribute),  # [RuntimeEnabled]
         'should_be_exposed_to_script': not (is_implemented_in_private_script and is_only_exposed_to_private_script),
         'world_suffixes': ['', 'ForMainWorld']
                           if 'PerWorldBindings' in extended_attributes
                           else [''],  # [PerWorldBindings]
     }
 
     if is_constructor_attribute(attribute):
-        constructor_getter_context(interface, attribute, context)
+        update_constructor_attribute_context(interface, attribute, context)
     if not has_custom_getter(attribute):
         getter_context(interface, attribute, context)
     if not has_custom_setter(attribute) and has_setter(attribute):
         setter_context(interface, attribute, context)
 
     return context
 
 
 ################################################################################
 # Getter
@@ skipping 355 matching lines @@
 idl_types.IdlType.constructor_type_name = property(
     # FIXME: replace this with a [ConstructorAttribute] extended attribute
     lambda self: strip_suffix(self.base_type, 'Constructor'))
 
 
 def is_constructor_attribute(attribute):
     # FIXME: replace this with [ConstructorAttribute] extended attribute
     return attribute.idl_type.name.endswith('Constructor')
 
 
-def constructor_getter_context(interface, attribute, context):
+def update_constructor_attribute_context(interface, attribute, context):
     context['needs_constructor_getter_callback'] = context['measure_as'] or context['deprecate_as']
+    # When the attribute name is the same as the interface name, do not generate
+    # callback functions for each attribute and use
+    # {{cpp_class}}ConstructorAttributeSetterCallback.  Otherwise, generate
+    # a callback function in order to hard-code the attribute name.
+    context['needs_constructor_setter_callback'] = context['name'] != context['constructor_type']