Kill [SetWrapperReferenceFromReference] IDL extended attribute

Source/bindings/tests/results/V8TestInterfacePython2.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * 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 62 matching lines @@
 
 namespace TestInterfacePython2V8Internal {
 
 template <typename T> void V8_USE(T) { }
 
 } // namespace TestInterfacePython2V8Internal
 
 void V8TestInterfacePython2::visitDOMWrapper(void* object, const v8::Persistent<v8::Object>& wrapper, v8::Isolate* isolate)
 {
     TestInterfacePython2* impl = fromInternalPointer(object);
-    if (Node* owner = impl->ownerNode()) {
-        Node* root = V8GCController::opaqueRootForGC(owner, isolate);
+    // The ownerNode() method may return a reference or a pointer but
+    // RefPtr can be constructed from either.
+    if (RefPtr<Node> owner = PassRefPtr<Node>(impl->ownerNode())) {
+        Node* root = V8GCController::opaqueRootForGC(owner.get(), isolate);
         isolate->SetReferenceFromGroup(v8::UniqueId(reinterpret_cast<intptr_t>(root)), wrapper);
         return;
     }
     setObjectGroup(object, wrapper, isolate);
 }
 
 static void configureV8TestInterfacePython2Template(v8::Handle<v8::FunctionTemplate> functionTemplate, v8::Isolate* isolate, WrapperWorldType currentWorldType)
 {
     functionTemplate->ReadOnlyPrototype();
 
@@ skipping 75 matching lines @@
     fromInternalPointer(object)->deref();
 }
 
 template<>
 v8::Handle<v8::Value> toV8NoInline(TestInterfacePython2* impl, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
 {
     return toV8(impl, creationContext, isolate);
 }
 
 } // namespace WebCore