static v8::Handle<v8::Value> navigationAttrGetter(v8::Local<v8::String> name, const v8::AccessorInfo& info)
{
    Performance* imp = V8Performance::toNative(info.Holder());
    RefPtr<PerformanceNavigation> result = imp->navigation();
    v8::Handle<v8::Value> wrapper = result.get() ? v8::Handle<v8::Value>(DOMDataStore::getWrapper(result.get(), info.GetIsolate())) : v8Undefined();
    if (wrapper.IsEmpty()) {
        wrapper = toV8(result.get(), info.Holder(), info.GetIsolate());
        if (!wrapper.IsEmpty())
            V8DOMWrapper::setNamedHiddenReference(info.Holder(), "navigation", wrapper);
    }
    return wrapper;
}