IDL: Improve "includes for type" mechanism in various ways

Source/bindings/scripts/v8_interface.py

 # Copyright (C) 2013 Google Inc. All rights reserved.
 # coding=utf-8
 #
 # 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 1234 matching lines @@
         if idl_type.use_output_parameter_for_result:
             return 'result.isNull()'
         if idl_type.is_string_type:
             return 'result.isNull()'
         if idl_type.is_interface_type:
             return '!result'
         if idl_type.base_type in ('any', 'object'):
             return 'result.isEmpty()'
         return ''
 
+    extended_attributes = getter.extended_attributes
     idl_type = getter.idl_type
-    extended_attributes = getter.extended_attributes
+    idl_type.add_includes_for_type(extended_attributes)
     is_call_with_script_state = v8_utilities.has_extended_attribute_value(getter, 'CallWith', 'ScriptState')
     is_raises_exception = 'RaisesException' in extended_attributes
     use_output_parameter_for_result = idl_type.use_output_parameter_for_result
 
     # FIXME: make more generic, so can use v8_methods.cpp_value
     cpp_method_name = 'impl->%s' % cpp_name(getter)
 
     if is_call_with_script_state:
         cpp_arguments.insert(0, 'scriptState')
     if is_raises_exception:
@@ skipping 22 matching lines @@
         'name': cpp_name(getter),
         'use_output_parameter_for_result': use_output_parameter_for_result,
         'v8_set_return_value': idl_type.v8_set_return_value('result', extended_attributes=extended_attributes, script_wrappable='impl', release=idl_type.release),
     }
 
 
 def property_setter(setter, interface):
     if not setter:
         return None
 
+    extended_attributes = setter.extended_attributes
     idl_type = setter.arguments[1].idl_type
-    extended_attributes = setter.extended_attributes
+    idl_type.add_includes_for_type(extended_attributes)
     is_call_with_script_state = v8_utilities.has_extended_attribute_value(setter, 'CallWith', 'ScriptState')
     is_raises_exception = 'RaisesException' in extended_attributes
 
     # [TypeChecking=Interface] / [LegacyInterfaceTypeChecking]
     has_type_checking_interface = (
         not is_legacy_interface_type_checking(interface, setter) and
         idl_type.is_wrapper_type)
 
     return {
         'has_exception_state': (is_raises_exception or
                                 idl_type.v8_conversion_needs_exception_state),
         'has_type_checking_interface': has_type_checking_interface,
         'idl_type': idl_type.base_type,
         'is_call_with_script_state': is_call_with_script_state,
         'is_custom': 'Custom' in extended_attributes,
         'is_nullable': idl_type.is_nullable,
         'is_raises_exception': is_raises_exception,
         'name': cpp_name(setter),
         'v8_value_to_local_cpp_value': idl_type.v8_value_to_local_cpp_value(
             extended_attributes, 'v8Value', 'propertyValue'),
     }
 
 
 def property_deleter(deleter):
     if not deleter:
         return None
 
+    extended_attributes = deleter.extended_attributes
     idl_type = deleter.idl_type
-    extended_attributes = deleter.extended_attributes
     is_call_with_script_state = v8_utilities.has_extended_attribute_value(deleter, 'CallWith', 'ScriptState')
     return {
         'is_call_with_script_state': is_call_with_script_state,
         'is_custom': 'Custom' in extended_attributes,
         'is_raises_exception': 'RaisesException' in extended_attributes,
         'name': cpp_name(deleter),
     }