Introduce V8DOMConfiguration::InstanceOrPrototype enum

Source/bindings/templates/interface.cpp

Index: Source/bindings/templates/interface.cpp
diff --git a/Source/bindings/templates/interface.cpp b/Source/bindings/templates/interface.cpp
index 3e9d7c0cb2877acaf8305b46003c0f1eec76277f..34d7d22266e047aa46d0329cbb8e5cbbdb6cc1e5 100644
--- a/Source/bindings/templates/interface.cpp
+++ b/Source/bindings/templates/interface.cpp
@@ -30,9 +30,9 @@
 {% set property_attribute = 'static_cast<v8::PropertyAttribute>(%s)' %
                             ' | '.join(attribute.property_attributes) %}
 {% set only_exposed_to_private_script = 'V8DOMConfiguration::OnlyExposedToPrivateScript' if attribute.only_exposed_to_private_script else 'V8DOMConfiguration::ExposedToAllScripts' %}
-{% set on_prototype = '1 /* on prototype */'
+{% set on_prototype = 'V8DOMConfiguration::OnPrototype'
        if interface_name == 'Window' and attribute.idl_type == 'EventHandler'
-       else '0 /* on instance */' %}
+       else 'V8DOMConfiguration::OnInstance' %}
 {% set attribute_configuration_list = [
        '"%s"' % attribute.name,
        getter_callback,
@@ -1053,7 +1053,7 @@ static void install{{v8_class}}Template(v8::Handle<v8::FunctionTemplate> functio
     ' | '.join(method.property_attributes or ['v8::DontDelete']) %}
 {% set only_exposed_to_private_script = 'V8DOMConfiguration::OnlyExposedToPrivateScript' if method.only_exposed_to_private_script else 'V8DOMConfiguration::ExposedToAllScripts' %}
 static const V8DOMConfiguration::AttributeConfiguration {{method.name}}OriginSafeAttributeConfiguration = {
-    "{{method.name}}", {{getter_callback}}, {{setter_callback}}, {{getter_callback_for_main_world}}, {{setter_callback_for_main_world}}, &{{v8_class}}::wrapperTypeInfo, v8::ALL_CAN_READ, {{property_attribute}}, {{only_exposed_to_private_script}}, false,
+    "{{method.name}}", {{getter_callback}}, {{setter_callback}}, {{getter_callback_for_main_world}}, {{setter_callback_for_main_world}}, &{{v8_class}}::wrapperTypeInfo, v8::ALL_CAN_READ, {{property_attribute}}, {{only_exposed_to_private_script}}, V8DOMConfiguration::OnInstance,
 };
 V8DOMConfiguration::installAttribute({{method.function_template}}, v8::Handle<v8::ObjectTemplate>(), {{method.name}}OriginSafeAttributeConfiguration, isolate);
 {%- endmacro %}