Forbid creating new wrapper from SetWrapperReferenceTo

Source/bindings/tests/results/V8TestInterface.cpp

Index: Source/bindings/tests/results/V8TestInterface.cpp
diff --git a/Source/bindings/tests/results/V8TestInterface.cpp b/Source/bindings/tests/results/V8TestInterface.cpp
index 6a089b901261abaa5bfc76b62f0f55ae53e059d2..af9e971360c1a8bd7122fcd78ada65951f72ca1c 100644
--- a/Source/bindings/tests/results/V8TestInterface.cpp
+++ b/Source/bindings/tests/results/V8TestInterface.cpp
@@ -1308,8 +1308,7 @@ void V8TestInterface::visitDOMWrapper(void* object, const v8::Persistent<v8::Obj
     V8WrapperInstantiationScope scope(creationContext, isolate);
     TestInterfaceImplementation* referencedName = impl->referencedName();
     if (referencedName) {
-        if (!DOMDataStore::containsWrapper<V8TestInterface>(referencedName, isolate))
-            wrap(referencedName, creationContext, isolate);
+        ASSERT(DOMDataStore::containsWrapper<V8TestInterface>(referencedName, isolate));
         DOMDataStore::setWrapperReference<V8TestInterface>(wrapper, referencedName, isolate);
     }
     setObjectGroup(object, wrapper, isolate);