Have DOMImplementation::document() return reference.

Source/bindings/tests/results/V8TestInterfacePython3.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 18 matching lines @@
  */
 
 // This file has been auto-generated by code_generator_v8.pm. DO NOT MODIFY!
 
 #include "config.h"
 #include "V8TestInterfacePython3.h"
 
 #include "RuntimeEnabledFeatures.h"
 #include "bindings/v8/ExceptionState.h"
 #include "bindings/v8/V8DOMConfiguration.h"
+#include "bindings/v8/V8GCController.h"
 #include "bindings/v8/V8ObjectConstructor.h"
 #include "core/dom/ContextFeatures.h"
 #include "core/dom/Document.h"
+#include "core/dom/Element.h"
 #include "platform/TraceEvent.h"
 #include "wtf/GetPtr.h"
 #include "wtf/RefPtr.h"
 
 namespace WebCore {
 
 static void initializeScriptWrappableForInterface(TestInterfacePython3* object)
 {
     if (ScriptWrappable::wrapperCanBeStoredInObject(object))
         ScriptWrappable::setTypeInfoInObject(object, &V8TestInterfacePython3::wrapperTypeInfo);
@@ skipping 14 matching lines @@
 
 namespace WebCore {
 const WrapperTypeInfo V8TestInterfacePython3::wrapperTypeInfo = { gin::kEmbedderBlink, V8TestInterfacePython3::domTemplate, V8TestInterfacePython3::derefObject, 0, 0, V8TestInterfacePython3::visitDOMWrapper, V8TestInterfacePython3::installPerContextEnabledMethods, 0, WrapperTypeObjectPrototype, false };
 
 namespace TestInterfacePython3V8Internal {
 
 template <typename T> void V8_USE(T) { }
 
 } // namespace TestInterfacePython3V8Internal
 
+void V8TestInterfacePython3::visitDOMWrapper(void* object, const v8::Persistent<v8::Object>& wrapper, v8::Isolate* isolate)
+{
+    TestInterfacePython3* impl = fromInternalPointer(object);
+    Node* root = V8GCController::opaqueRootForGC(&impl->document(), isolate);
+    isolate->SetReferenceFromGroup(v8::UniqueId(reinterpret_cast<intptr_t>(root)), wrapper);
+}
+
 static void configureV8TestInterfacePython3Template(v8::Handle<v8::FunctionTemplate> functionTemplate, v8::Isolate* isolate, WrapperWorldType currentWorldType)
 {
     functionTemplate->ReadOnlyPrototype();
 
     v8::Local<v8::Signature> defaultSignature;
     defaultSignature = V8DOMConfiguration::installDOMClassTemplate(functionTemplate, "TestInterfacePython3", v8::Local<v8::FunctionTemplate>(), V8TestInterfacePython3::internalFieldCount,
         0, 0,
         0, 0,
         0, 0,
         isolate, currentWorldType);
@@ skipping 55 matching lines @@
     fromInternalPointer(object)->deref();
 }
 
 template<>
 v8::Handle<v8::Value> toV8NoInline(TestInterfacePython3* impl, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
 {
     return toV8(impl, creationContext, isolate);
 }
 
 } // namespace WebCore