Forbid creating new wrapper from SetWrapperReferenceTo

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 f90e254bdc07551b936117e7185cf3ba2a24937e..4456e7d76af865c650e40e7a89b7e955a1ad2d9e 100644
--- a/Source/bindings/templates/interface.cpp
+++ b/Source/bindings/templates/interface.cpp
@@ -709,8 +709,7 @@ void {{v8_class}}::visitDOMWrapper(void* object, const v8::Persistent<v8::Object
     {% for set_wrapper_reference_to in set_wrapper_reference_to_list %}
     {{set_wrapper_reference_to.cpp_type}} {{set_wrapper_reference_to.name}} = impl->{{set_wrapper_reference_to.name}}();
     if ({{set_wrapper_reference_to.name}}) {
-        if (!DOMDataStore::containsWrapper<{{set_wrapper_reference_to.v8_type}}>({{set_wrapper_reference_to.name}}, isolate))
-            wrap({{set_wrapper_reference_to.name}}, creationContext, isolate);
+        ASSERT(DOMDataStore::containsWrapper<{{set_wrapper_reference_to.v8_type}}>({{set_wrapper_reference_to.name}}, isolate));
         DOMDataStore::setWrapperReference<{{set_wrapper_reference_to.v8_type}}>(wrapper, {{set_wrapper_reference_to.name}}, isolate);
     }
     {% endfor %}