bindings: Supports constructor attributes on prototype chains.

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 115 matching lines @@
         'only_exposed_to_private_script': is_only_exposed_to_private_script,
         'per_context_enabled_function': v8_utilities.per_context_enabled_function_name(attribute),  # [PerContextEnabled]
         'private_script_v8_value_to_local_cpp_value': idl_type.v8_value_to_local_cpp_value(
             extended_attributes, 'v8Value', 'cppValue', bailout_return_value='false', isolate='scriptState->isolate()'),
         'property_attributes': property_attributes(interface, attribute),
         'reflect_empty': extended_attributes.get('ReflectEmpty'),
         'reflect_invalid': extended_attributes.get('ReflectInvalid', ''),
         '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]
-        'setter_callback': setter_callback_name(interface, attribute),
         '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)
-        return 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 143 matching lines @@
         interface = interfaces[target_interface_name]
         try:
             attribute = next(candidate
                              for candidate in interface.attributes
                              if candidate.name == target_attribute_name)
         except StopIteration:
             raise Exception('[PutForward] target not found:\n'
                             'Attribute "%s" is not present in interface "%s"' %
                             (target_attribute_name, target_interface_name))
 
-    if 'Replaceable' in attribute.extended_attributes:
+    if ('Replaceable' in attribute.extended_attributes or
+            is_constructor_attribute(attribute)):
         context['cpp_setter'] = '%sForceSetAttributeOnThis(propertyName, v8Value, info)' % cpp_name(interface)
         return
 
     extended_attributes = attribute.extended_attributes
     idl_type = attribute.idl_type
 
     # [RaisesException], [RaisesException=Setter]
     is_setter_raises_exception = (
         'RaisesException' in extended_attributes and
         extended_attributes['RaisesException'] in [None, 'Setter'])
@@ skipping 102 matching lines @@
     else:
         namespace = 'HTMLNames'
     includes.add('core/%s.h' % namespace)
     return '%s::%sAttr' % (namespace, content_attribute_name)
 
 
 ################################################################################
 # Attribute configuration
 ################################################################################
 
-def setter_callback_name(interface, attribute):
-    cpp_class_name = cpp_name(interface)
-    cpp_class_name_or_partial = cpp_name_or_partial(interface)
-
-    if not has_setter(attribute):
-        return '0'
-    if (is_constructor_attribute(attribute)):
-        return '%sV8Internal::%sForceSetAttributeOnThisCallback' % (
-            cpp_class_name_or_partial, cpp_class_name)
-    return '%sV8Internal::%sAttributeSetterCallback' % (cpp_class_name_or_partial, attribute.name)
-
-
 # [PutForwards], [Replaceable]
 def has_setter(attribute):
     return (not attribute.is_read_only or
             'PutForwards' in attribute.extended_attributes or
             'Replaceable' in attribute.extended_attributes)
 
 
 # [DoNotCheckSecurity], [Unforgeable]
 def access_control_list(interface, attribute):
     extended_attributes = attribute.extended_attributes
@@ skipping 47 matching lines @@
     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):
     context['needs_constructor_getter_callback'] = context['measure_as'] or context['deprecate_as']