Bindings: use |holder| local variable in attribute getters and setters

Source/bindings/tests/results/V8TestObject.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // This file has been auto-generated by code_generator_v8.py. DO NOT MODIFY!
 
 #include "config.h"
 #include "V8TestObject.h"
 
 #include "HTMLNames.h"
@@ skipping 50 matching lines @@
 
 namespace WebCore {
 const WrapperTypeInfo V8TestObject::wrapperTypeInfo = { gin::kEmbedderBlink, V8TestObject::domTemplate, V8TestObject::derefObject, 0, V8TestObject::toEventTarget, 0, V8TestObject::installPerContextEnabledMethods, &V8EventTarget::wrapperTypeInfo, WrapperTypeObjectPrototype, false };
 
 namespace TestObjectV8Internal {
 
 template <typename T> void V8_USE(T) { }
 
 static void readOnlyLongAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueInt(info, impl->readOnlyLongAttr());
 }
 
 static void readOnlyLongAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::readOnlyLongAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void readOnlyStringAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueString(info, impl->readOnlyStringAttr(), info.GetIsolate());
 }
 
 static void readOnlyStringAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::readOnlyStringAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void readOnlyTestObjectAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     RefPtr<TestObject> result(impl->readOnlyTestObjectAttr());
     if (result && DOMDataStore::setReturnValueFromWrapper<V8TestObject>(info.GetReturnValue(), result.get()))
         return;
-    v8::Handle<v8::Value> wrapper = toV8(result.get(), info.Holder(), info.GetIsolate());
+    v8::Handle<v8::Value> wrapper = toV8(result.get(), holder, info.GetIsolate());
     if (!wrapper.IsEmpty()) {
-        V8HiddenValue::setHiddenValue(info.GetIsolate(), info.Holder(), v8AtomicString(info.GetIsolate(), "readOnlyTestObjectAttr"), wrapper);
+        V8HiddenValue::setHiddenValue(info.GetIsolate(), holder, v8AtomicString(info.GetIsolate(), "readOnlyTestObjectAttr"), wrapper);
         v8SetReturnValue(info, wrapper);
     }
 }
 
 static void readOnlyTestObjectAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::readOnlyTestObjectAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
@@ skipping 30 matching lines @@
 
 static void staticStringAttrAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::staticStringAttrAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void enumAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueString(info, impl->enumAttr(), info.GetIsolate());
 }
 
 static void enumAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::enumAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void enumAttrAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_FOR_V8STRINGRESOURCE_VOID(V8StringResource<>, cppValue, jsValue);
     String string = cppValue;
     if (!(string == "" || string == "EnumValue1" || string == "EnumValue2" || string == "EnumValue3"))
         return;
     impl->setEnumAttr(cppValue);
 }
 
 static void enumAttrAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::enumAttrAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void readOnlyEnumAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueString(info, impl->readOnlyEnumAttr(), info.GetIsolate());
 }
 
 static void readOnlyEnumAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::readOnlyEnumAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void byteAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueInt(info, impl->byteAttr());
 }
 
 static void byteAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::byteAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void byteAttrAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    ExceptionState exceptionState(ExceptionState::SetterContext, "byteAttr", "TestObject", info.Holder(), info.GetIsolate());
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    ExceptionState exceptionState(ExceptionState::SetterContext, "byteAttr", "TestObject", holder, info.GetIsolate());
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_EXCEPTION_VOID(int, cppValue, toInt8(jsValue, exceptionState), exceptionState);
     impl->setByteAttr(cppValue);
 }
 
 static void byteAttrAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::byteAttrAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void octetAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueUnsigned(info, impl->octetAttr());
 }
 
 static void octetAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::octetAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void octetAttrAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    ExceptionState exceptionState(ExceptionState::SetterContext, "octetAttr", "TestObject", info.Holder(), info.GetIsolate());
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    ExceptionState exceptionState(ExceptionState::SetterContext, "octetAttr", "TestObject", holder, info.GetIsolate());
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_EXCEPTION_VOID(unsigned, cppValue, toUInt8(jsValue, exceptionState), exceptionState);
     impl->setOctetAttr(cppValue);
 }
 
 static void octetAttrAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::octetAttrAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void shortAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueInt(info, impl->shortAttr());
 }
 
 static void shortAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::shortAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void shortAttrAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    ExceptionState exceptionState(ExceptionState::SetterContext, "shortAttr", "TestObject", info.Holder(), info.GetIsolate());
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    ExceptionState exceptionState(ExceptionState::SetterContext, "shortAttr", "TestObject", holder, info.GetIsolate());
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_EXCEPTION_VOID(int, cppValue, toInt16(jsValue, exceptionState), exceptionState);
     impl->setShortAttr(cppValue);
 }
 
 static void shortAttrAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::shortAttrAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void unsignedShortAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueUnsigned(info, impl->unsignedShortAttr());
 }
 
 static void unsignedShortAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::unsignedShortAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void unsignedShortAttrAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    ExceptionState exceptionState(ExceptionState::SetterContext, "unsignedShortAttr", "TestObject", info.Holder(), info.GetIsolate());
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    ExceptionState exceptionState(ExceptionState::SetterContext, "unsignedShortAttr", "TestObject", holder, info.GetIsolate());
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_EXCEPTION_VOID(unsigned, cppValue, toUInt16(jsValue, exceptionState), exceptionState);
     impl->setUnsignedShortAttr(cppValue);
 }
 
 static void unsignedShortAttrAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::unsignedShortAttrAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void longAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueInt(info, impl->longAttr());
 }
 
 static void longAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::longAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void longAttrAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    ExceptionState exceptionState(ExceptionState::SetterContext, "longAttr", "TestObject", info.Holder(), info.GetIsolate());
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    ExceptionState exceptionState(ExceptionState::SetterContext, "longAttr", "TestObject", holder, info.GetIsolate());
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_EXCEPTION_VOID(int, cppValue, toInt32(jsValue, exceptionState), exceptionState);
     impl->setLongAttr(cppValue);
 }
 
 static void longAttrAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::longAttrAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void longLongAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValue(info, static_cast<double>(impl->longLongAttr()));
 }
 
 static void longLongAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::longLongAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void longLongAttrAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    ExceptionState exceptionState(ExceptionState::SetterContext, "longLongAttr", "TestObject", info.Holder(), info.GetIsolate());
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    ExceptionState exceptionState(ExceptionState::SetterContext, "longLongAttr", "TestObject", holder, info.GetIsolate());
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_EXCEPTION_VOID(long long, cppValue, toInt64(jsValue, exceptionState), exceptionState);
     impl->setLongLongAttr(cppValue);
 }
 
 static void longLongAttrAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::longLongAttrAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void unsignedLongLongAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValue(info, static_cast<double>(impl->unsignedLongLongAttr()));
 }
 
 static void unsignedLongLongAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::unsignedLongLongAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void unsignedLongLongAttrAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    ExceptionState exceptionState(ExceptionState::SetterContext, "unsignedLongLongAttr", "TestObject", info.Holder(), info.GetIsolate());
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    ExceptionState exceptionState(ExceptionState::SetterContext, "unsignedLongLongAttr", "TestObject", holder, info.GetIsolate());
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_EXCEPTION_VOID(unsigned long long, cppValue, toUInt64(jsValue, exceptionState), exceptionState);
     impl->setUnsignedLongLongAttr(cppValue);
 }
 
 static void unsignedLongLongAttrAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::unsignedLongLongAttrAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void stringAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueString(info, impl->stringAttr(), info.GetIsolate());
 }
 
 static void stringAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::stringAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void stringAttrAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_FOR_V8STRINGRESOURCE_VOID(V8StringResource<>, cppValue, jsValue);
     impl->setStringAttr(cppValue);
 }
 
 static void stringAttrAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::stringAttrAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void treatNullAsNullStringStringAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueString(info, impl->treatNullAsNullStringStringAttr(), info.GetIsolate());
 }
 
 static void treatNullAsNullStringStringAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::treatNullAsNullStringStringAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void treatNullAsNullStringStringAttrAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_FOR_V8STRINGRESOURCE_VOID(V8StringResource<WithNullCheck>, cppValue, jsValue);
     impl->setTreatNullAsNullStringStringAttr(cppValue);
 }
 
 static void treatNullAsNullStringStringAttrAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::treatNullAsNullStringStringAttrAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void treatNullAsNullStringTreatUndefinedAsNullStringStringAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueString(info, impl->treatNullAsNullStringTreatUndefinedAsNullStringStringAttr(), info.GetIsolate());
 }
 
 static void treatNullAsNullStringTreatUndefinedAsNullStringStringAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::treatNullAsNullStringTreatUndefinedAsNullStringStringAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void treatNullAsNullStringTreatUndefinedAsNullStringStringAttrAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_FOR_V8STRINGRESOURCE_VOID(V8StringResource<WithUndefinedOrNullCheck>, cppValue, jsValue);
     impl->setTreatNullAsNullStringTreatUndefinedAsNullStringStringAttr(cppValue);
 }
 
 static void treatNullAsNullStringTreatUndefinedAsNullStringStringAttrAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::treatNullAsNullStringTreatUndefinedAsNullStringStringAttrAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void eventHandlerAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     EventListener* jsValue = impl->eventHandlerAttr();
     v8SetReturnValue(info, jsValue ? v8::Handle<v8::Value>(V8AbstractEventListener::cast(jsValue)->getListenerObject(impl->executionContext())) : v8::Handle<v8::Value>(v8::Null(info.GetIsolate())));
 }
 
 static void eventHandlerAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::eventHandlerAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void eventHandlerAttrAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
-    moveEventListenerToNewWrapper(info.Holder(), impl->eventHandlerAttr(), jsValue, V8TestObject::eventListenerCacheIndex, info.GetIsolate());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
+    moveEventListenerToNewWrapper(holder, impl->eventHandlerAttr(), jsValue, V8TestObject::eventListenerCacheIndex, info.GetIsolate());
     impl->setEventHandlerAttr(V8EventListenerList::getEventListener(jsValue, true, ListenerFindOrCreate));
 }
 
 static void eventHandlerAttrAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::eventHandlerAttrAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void testObjAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueFast(info, WTF::getPtr(impl->testObjAttr()), impl);
 }
 
 static void testObjAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     UseCounter::count(callingExecutionContext(info.GetIsolate()), UseCounter::TestFeature);
     TestObjectV8Internal::testObjAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void testObjAttrAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_VOID(TestObject*, cppValue, V8TestObject::toNativeWithTypeCheck(info.GetIsolate(), jsValue));
     impl->setTestObjAttr(WTF::getPtr(cppValue));
 }
 
 static void testObjAttrAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     UseCounter::count(callingExecutionContext(info.GetIsolate()), UseCounter::TestFeature);
     TestObjectV8Internal::testObjAttrAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void attrWithJSGetterAndSetterAttributeGetter(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueString(info, impl->attrWithJSGetterAndSetter(), info.GetIsolate());
 }
 
 static void attrWithJSGetterAndSetterAttributeGetterCallback(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::attrWithJSGetterAndSetterAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void attrWithJSGetterAndSetterAttributeSetter(v8::Local<v8::Value> jsValue, const v8::FunctionCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_FOR_V8STRINGRESOURCE_VOID(V8StringResource<>, cppValue, jsValue);
     impl->setAttrWithJSGetterAndSetter(cppValue);
 }
 
 static void attrWithJSGetterAndSetterAttributeSetterCallback(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     v8::Local<v8::Value> jsValue = info[0];
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::attrWithJSGetterAndSetterAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void XMLObjAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueFast(info, WTF::getPtr(impl->xmlObjAttr()), impl);
 }
 
 static void XMLObjAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::XMLObjAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void XMLObjAttrAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_VOID(TestObject*, cppValue, V8TestObject::toNativeWithTypeCheck(info.GetIsolate(), jsValue));
     impl->setXMLObjAttr(WTF::getPtr(cppValue));
 }
 
 static void XMLObjAttrAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::XMLObjAttrAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void reflectedStringAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueString(info, impl->fastGetAttribute(HTMLNames::reflectedstringattrAttr), info.GetIsolate());
 }
 
 static void reflectedStringAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::reflectedStringAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void reflectedStringAttrAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_FOR_V8STRINGRESOURCE_VOID(V8StringResource<>, cppValue, jsValue);
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     impl->setAttribute(HTMLNames::reflectedstringattrAttr, cppValue);
 }
 
 static void reflectedStringAttrAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     TestObjectV8Internal::reflectedStringAttrAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void reflectedTreatNullAsNullStringStringAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueString(info, impl->fastGetAttribute(HTMLNames::reflectedtreatnullasnullstringstringattrAttr), info.GetIsolate());
 }
 
 static void reflectedTreatNullAsNullStringStringAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::reflectedTreatNullAsNullStringStringAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void reflectedTreatNullAsNullStringStringAttrAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_FOR_V8STRINGRESOURCE_VOID(V8StringResource<WithNullCheck>, cppValue, jsValue);
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     impl->setAttribute(HTMLNames::reflectedtreatnullasnullstringstringattrAttr, cppValue);
 }
 
 static void reflectedTreatNullAsNullStringStringAttrAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     TestObjectV8Internal::reflectedTreatNullAsNullStringStringAttrAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void reflectedTreatNullAsNullStringTreatUndefinedAsNullStringStringAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueString(info, impl->fastGetAttribute(HTMLNames::reflectedtreatnullasnullstringtreatundefinedasnullstringstringattrAttr), info.GetIsolate());
 }
 
 static void reflectedTreatNullAsNullStringTreatUndefinedAsNullStringStringAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::reflectedTreatNullAsNullStringTreatUndefinedAsNullStringStringAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void reflectedTreatNullAsNullStringTreatUndefinedAsNullStringStringAttrAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_FOR_V8STRINGRESOURCE_VOID(V8StringResource<WithUndefinedOrNullCheck>, cppValue, jsValue);
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     impl->setAttribute(HTMLNames::reflectedtreatnullasnullstringtreatundefinedasnullstringstringattrAttr, cppValue);
 }
 
 static void reflectedTreatNullAsNullStringTreatUndefinedAsNullStringStringAttrAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     TestObjectV8Internal::reflectedTreatNullAsNullStringTreatUndefinedAsNullStringStringAttrAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void reflectedIntegralAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueInt(info, impl->getIntegralAttribute(HTMLNames::reflectedintegralattrAttr));
 }
 
 static void reflectedIntegralAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::reflectedIntegralAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void reflectedIntegralAttrAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    ExceptionState exceptionState(ExceptionState::SetterContext, "reflectedIntegralAttr", "TestObject", info.Holder(), info.GetIsolate());
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    ExceptionState exceptionState(ExceptionState::SetterContext, "reflectedIntegralAttr", "TestObject", holder, info.GetIsolate());
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_EXCEPTION_VOID(int, cppValue, toInt32(jsValue, exceptionState), exceptionState);
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     impl->setIntegralAttribute(HTMLNames::reflectedintegralattrAttr, cppValue);
 }
 
 static void reflectedIntegralAttrAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     TestObjectV8Internal::reflectedIntegralAttrAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void reflectedUnsignedIntegralAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueUnsigned(info, std::max(0, impl->getIntegralAttribute(HTMLNames::reflectedunsignedintegralattrAttr)));
 }
 
 static void reflectedUnsignedIntegralAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::reflectedUnsignedIntegralAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void reflectedUnsignedIntegralAttrAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    ExceptionState exceptionState(ExceptionState::SetterContext, "reflectedUnsignedIntegralAttr", "TestObject", info.Holder(), info.GetIsolate());
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    ExceptionState exceptionState(ExceptionState::SetterContext, "reflectedUnsignedIntegralAttr", "TestObject", holder, info.GetIsolate());
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_EXCEPTION_VOID(unsigned, cppValue, toUInt32(jsValue, exceptionState), exceptionState);
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     impl->setUnsignedIntegralAttribute(HTMLNames::reflectedunsignedintegralattrAttr, cppValue);
 }
 
 static void reflectedUnsignedIntegralAttrAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     TestObjectV8Internal::reflectedUnsignedIntegralAttrAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void reflectedBooleanAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueBool(info, impl->fastHasAttribute(HTMLNames::reflectedbooleanattrAttr));
 }
 
 static void reflectedBooleanAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::reflectedBooleanAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void reflectedBooleanAttrAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_VOID(bool, cppValue, jsValue->BooleanValue());
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     impl->setBooleanAttribute(HTMLNames::reflectedbooleanattrAttr, cppValue);
 }
 
 static void reflectedBooleanAttrAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     TestObjectV8Internal::reflectedBooleanAttrAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void reflectedURLAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueString(info, impl->getURLAttribute(HTMLNames::reflectedurlattrAttr), info.GetIsolate());
 }
 
 static void reflectedURLAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::reflectedURLAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void reflectedURLAttrAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_FOR_V8STRINGRESOURCE_VOID(V8StringResource<>, cppValue, jsValue);
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     impl->setAttribute(HTMLNames::reflectedurlattrAttr, cppValue);
 }
 
 static void reflectedURLAttrAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     TestObjectV8Internal::reflectedURLAttrAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void reflectedTreatNullAsNullStringURLAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueString(info, impl->getURLAttribute(HTMLNames::reflectedtreatnullasnullstringurlattrAttr), info.GetIsolate());
 }
 
 static void reflectedTreatNullAsNullStringURLAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::reflectedTreatNullAsNullStringURLAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void reflectedTreatNullAsNullStringURLAttrAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_FOR_V8STRINGRESOURCE_VOID(V8StringResource<WithNullCheck>, cppValue, jsValue);
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     impl->setAttribute(HTMLNames::reflectedtreatnullasnullstringurlattrAttr, cppValue);
 }
 
 static void reflectedTreatNullAsNullStringURLAttrAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     TestObjectV8Internal::reflectedTreatNullAsNullStringURLAttrAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void reflectedTreatNullAsNullStringTreatUndefinedAsNullStringURLAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueString(info, impl->getURLAttribute(HTMLNames::reflectedtreatnullasnullstringtreatundefinedasnullstringurlattrAttr), info.GetIsolate());
 }
 
 static void reflectedTreatNullAsNullStringTreatUndefinedAsNullStringURLAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::reflectedTreatNullAsNullStringTreatUndefinedAsNullStringURLAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void reflectedTreatNullAsNullStringTreatUndefinedAsNullStringURLAttrAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_FOR_V8STRINGRESOURCE_VOID(V8StringResource<WithUndefinedOrNullCheck>, cppValue, jsValue);
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     impl->setAttribute(HTMLNames::reflectedtreatnullasnullstringtreatundefinedasnullstringurlattrAttr, cppValue);
 }
 
 static void reflectedTreatNullAsNullStringTreatUndefinedAsNullStringURLAttrAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     TestObjectV8Internal::reflectedTreatNullAsNullStringTreatUndefinedAsNullStringURLAttrAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void reflectedCustomStringAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueString(info, impl->fastGetAttribute(HTMLNames::customContentStringAttrAttr), info.GetIsolate());
 }
 
 static void reflectedCustomStringAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::reflectedCustomStringAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void reflectedCustomStringAttrAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_FOR_V8STRINGRESOURCE_VOID(V8StringResource<>, cppValue, jsValue);
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     impl->setAttribute(HTMLNames::customContentStringAttrAttr, cppValue);
 }
 
 static void reflectedCustomStringAttrAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     TestObjectV8Internal::reflectedCustomStringAttrAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void reflectedTreatNullAsNullStringCustomStringAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueString(info, impl->fastGetAttribute(HTMLNames::customContentStringAttrAttr), info.GetIsolate());
 }
 
 static void reflectedTreatNullAsNullStringCustomStringAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::reflectedTreatNullAsNullStringCustomStringAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void reflectedTreatNullAsNullStringCustomStringAttrAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_FOR_V8STRINGRESOURCE_VOID(V8StringResource<WithNullCheck>, cppValue, jsValue);
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     impl->setAttribute(HTMLNames::customContentStringAttrAttr, cppValue);
 }
 
 static void reflectedTreatNullAsNullStringCustomStringAttrAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     TestObjectV8Internal::reflectedTreatNullAsNullStringCustomStringAttrAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void reflectedTreatNullAsNullStringTreatUndefinedAsNullStringCustomStringAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueString(info, impl->fastGetAttribute(HTMLNames::customContentStringAttrAttr), info.GetIsolate());
 }
 
 static void reflectedTreatNullAsNullStringTreatUndefinedAsNullStringCustomStringAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::reflectedTreatNullAsNullStringTreatUndefinedAsNullStringCustomStringAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void reflectedTreatNullAsNullStringTreatUndefinedAsNullStringCustomStringAttrAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_FOR_V8STRINGRESOURCE_VOID(V8StringResource<WithUndefinedOrNullCheck>, cppValue, jsValue);
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     impl->setAttribute(HTMLNames::customContentStringAttrAttr, cppValue);
 }
 
 static void reflectedTreatNullAsNullStringTreatUndefinedAsNullStringCustomStringAttrAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     TestObjectV8Internal::reflectedTreatNullAsNullStringTreatUndefinedAsNullStringCustomStringAttrAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void reflectedCustomIntegralAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueInt(info, impl->getIntegralAttribute(HTMLNames::customContentIntegralAttrAttr));
 }
 
 static void reflectedCustomIntegralAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::reflectedCustomIntegralAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void reflectedCustomIntegralAttrAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    ExceptionState exceptionState(ExceptionState::SetterContext, "reflectedCustomIntegralAttr", "TestObject", info.Holder(), info.GetIsolate());
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    ExceptionState exceptionState(ExceptionState::SetterContext, "reflectedCustomIntegralAttr", "TestObject", holder, info.GetIsolate());
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_EXCEPTION_VOID(int, cppValue, toInt32(jsValue, exceptionState), exceptionState);
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     impl->setIntegralAttribute(HTMLNames::customContentIntegralAttrAttr, cppValue);
 }
 
 static void reflectedCustomIntegralAttrAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     TestObjectV8Internal::reflectedCustomIntegralAttrAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void reflectedCustomBooleanAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueBool(info, impl->fastHasAttribute(HTMLNames::customContentBooleanAttrAttr));
 }
 
 static void reflectedCustomBooleanAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::reflectedCustomBooleanAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void reflectedCustomBooleanAttrAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_VOID(bool, cppValue, jsValue->BooleanValue());
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     impl->setBooleanAttribute(HTMLNames::customContentBooleanAttrAttr, cppValue);
 }
 
 static void reflectedCustomBooleanAttrAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     TestObjectV8Internal::reflectedCustomBooleanAttrAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void reflectedCustomURLAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueString(info, impl->getURLAttribute(HTMLNames::customContentURLAttrAttr), info.GetIsolate());
 }
 
 static void reflectedCustomURLAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::reflectedCustomURLAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void reflectedCustomURLAttrAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_FOR_V8STRINGRESOURCE_VOID(V8StringResource<>, cppValue, jsValue);
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     impl->setAttribute(HTMLNames::customContentURLAttrAttr, cppValue);
 }
 
 static void reflectedCustomURLAttrAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     TestObjectV8Internal::reflectedCustomURLAttrAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void reflectedTreatNullAsNullStringCustomURLAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueString(info, impl->getURLAttribute(HTMLNames::customContentURLAttrAttr), info.GetIsolate());
 }
 
 static void reflectedTreatNullAsNullStringCustomURLAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::reflectedTreatNullAsNullStringCustomURLAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void reflectedTreatNullAsNullStringCustomURLAttrAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_FOR_V8STRINGRESOURCE_VOID(V8StringResource<WithNullCheck>, cppValue, jsValue);
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     impl->setAttribute(HTMLNames::customContentURLAttrAttr, cppValue);
 }
 
 static void reflectedTreatNullAsNullStringCustomURLAttrAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     TestObjectV8Internal::reflectedTreatNullAsNullStringCustomURLAttrAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void reflectedTreatNullAsNullStringTreatUndefinedAsNullStringCustomURLAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueString(info, impl->getURLAttribute(HTMLNames::customContentURLAttrAttr), info.GetIsolate());
 }
 
 static void reflectedTreatNullAsNullStringTreatUndefinedAsNullStringCustomURLAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::reflectedTreatNullAsNullStringTreatUndefinedAsNullStringCustomURLAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void reflectedTreatNullAsNullStringTreatUndefinedAsNullStringCustomURLAttrAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_FOR_V8STRINGRESOURCE_VOID(V8StringResource<WithUndefinedOrNullCheck>, cppValue, jsValue);
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     impl->setAttribute(HTMLNames::customContentURLAttrAttr, cppValue);
 }
 
 static void reflectedTreatNullAsNullStringTreatUndefinedAsNullStringCustomURLAttrAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     TestObjectV8Internal::reflectedTreatNullAsNullStringTreatUndefinedAsNullStringCustomURLAttrAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void limitedToOnlyOneAttributeAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     String resultValue = impl->fastGetAttribute(HTMLNames::limitedtoonlyoneattributeAttr);
     if (resultValue.isEmpty()) {
         ;
     } else if (equalIgnoringCase(resultValue, "unique")) {
         resultValue = "unique";
     } else {
         resultValue = "";
     }
     v8SetReturnValueString(info, resultValue, info.GetIsolate());
 }
 
 static void limitedToOnlyOneAttributeAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::limitedToOnlyOneAttributeAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void limitedToOnlyOneAttributeAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_FOR_V8STRINGRESOURCE_VOID(V8StringResource<>, cppValue, jsValue);
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     impl->setAttribute(HTMLNames::limitedtoonlyoneattributeAttr, cppValue);
 }
 
 static void limitedToOnlyOneAttributeAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     TestObjectV8Internal::limitedToOnlyOneAttributeAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void limitedToOnlyAttributeAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     String resultValue = impl->fastGetAttribute(HTMLNames::limitedtoonlyattributeAttr);
     if (resultValue.isEmpty()) {
         ;
     } else if (equalIgnoringCase(resultValue, "Per")) {
         resultValue = "Per";
     } else if (equalIgnoringCase(resultValue, "Paal")) {
         resultValue = "Paal";
     } else if (equalIgnoringCase(resultValue, "Espen")) {
         resultValue = "Espen";
     } else {
         resultValue = "";
     }
     v8SetReturnValueString(info, resultValue, info.GetIsolate());
 }
 
 static void limitedToOnlyAttributeAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::limitedToOnlyAttributeAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void limitedToOnlyAttributeAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_FOR_V8STRINGRESOURCE_VOID(V8StringResource<>, cppValue, jsValue);
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     impl->setAttribute(HTMLNames::limitedtoonlyattributeAttr, cppValue);
 }
 
 static void limitedToOnlyAttributeAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     TestObjectV8Internal::limitedToOnlyAttributeAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void limitedToOnlyOtherAttributeAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     String resultValue = impl->fastGetAttribute(HTMLNames::OtherAttr);
     if (resultValue.isEmpty()) {
         ;
     } else if (equalIgnoringCase(resultValue, "Value1")) {
         resultValue = "Value1";
     } else if (equalIgnoringCase(resultValue, "Value2")) {
         resultValue = "Value2";
     } else {
         resultValue = "";
     }
     v8SetReturnValueString(info, resultValue, info.GetIsolate());
 }
 
 static void limitedToOnlyOtherAttributeAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::limitedToOnlyOtherAttributeAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void limitedToOnlyOtherAttributeAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_FOR_V8STRINGRESOURCE_VOID(V8StringResource<>, cppValue, jsValue);
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     impl->setAttribute(HTMLNames::OtherAttr, cppValue);
 }
 
 static void limitedToOnlyOtherAttributeAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     TestObjectV8Internal::limitedToOnlyOtherAttributeAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void limitedWithMissingDefaultAttributeAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     String resultValue = impl->fastGetAttribute(HTMLNames::limitedwithmissingdefaultattributeAttr);
     if (resultValue.isEmpty()) {
         resultValue = "rsa";
     } else if (equalIgnoringCase(resultValue, "rsa")) {
         resultValue = "rsa";
     } else if (equalIgnoringCase(resultValue, "dsa")) {
         resultValue = "dsa";
     } else {
         resultValue = "";
     }
     v8SetReturnValueString(info, resultValue, info.GetIsolate());
 }
 
 static void limitedWithMissingDefaultAttributeAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::limitedWithMissingDefaultAttributeAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void limitedWithMissingDefaultAttributeAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_FOR_V8STRINGRESOURCE_VOID(V8StringResource<>, cppValue, jsValue);
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     impl->setAttribute(HTMLNames::limitedwithmissingdefaultattributeAttr, cppValue);
 }
 
 static void limitedWithMissingDefaultAttributeAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     TestObjectV8Internal::limitedWithMissingDefaultAttributeAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void limitedWithInvalidMissingDefaultAttributeAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     String resultValue = impl->fastGetAttribute(HTMLNames::limitedwithinvalidmissingdefaultattributeAttr);
     if (resultValue.isEmpty()) {
         resultValue = "auto";
     } else if (equalIgnoringCase(resultValue, "ltr")) {
         resultValue = "ltr";
     } else if (equalIgnoringCase(resultValue, "rtl")) {
         resultValue = "rtl";
     } else if (equalIgnoringCase(resultValue, "auto")) {
         resultValue = "auto";
     } else {
         resultValue = "ltr";
     }
     v8SetReturnValueString(info, resultValue, info.GetIsolate());
 }
 
 static void limitedWithInvalidMissingDefaultAttributeAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::limitedWithInvalidMissingDefaultAttributeAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void limitedWithInvalidMissingDefaultAttributeAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_FOR_V8STRINGRESOURCE_VOID(V8StringResource<>, cppValue, jsValue);
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     impl->setAttribute(HTMLNames::limitedwithinvalidmissingdefaultattributeAttr, cppValue);
 }
 
 static void limitedWithInvalidMissingDefaultAttributeAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     TestObjectV8Internal::limitedWithInvalidMissingDefaultAttributeAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void limitedWithInvalidAndMissingDefaultAttributeAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     String resultValue = impl->fastGetAttribute(HTMLNames::limitedwithinvalidandmissingdefaultattributeAttr);
     if (resultValue.isEmpty()) {
         resultValue = "left";
     } else if (equalIgnoringCase(resultValue, "left")) {
         resultValue = "left";
     } else if (equalIgnoringCase(resultValue, "right")) {
         resultValue = "right";
     } else {
         resultValue = "left";
     }
     v8SetReturnValueString(info, resultValue, info.GetIsolate());
 }
 
 static void limitedWithInvalidAndMissingDefaultAttributeAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::limitedWithInvalidAndMissingDefaultAttributeAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void limitedWithInvalidAndMissingDefaultAttributeAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_FOR_V8STRINGRESOURCE_VOID(V8StringResource<>, cppValue, jsValue);
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     impl->setAttribute(HTMLNames::limitedwithinvalidandmissingdefaultattributeAttr, cppValue);
 }
 
 static void limitedWithInvalidAndMissingDefaultAttributeAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
     TestObjectV8Internal::limitedWithInvalidAndMissingDefaultAttributeAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void corsSettingAttributeAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     String resultValue = impl->fastGetAttribute(HTMLNames::corssettingattributeAttr);
     if (resultValue.isNull()) {
         ;
     } else if (resultValue.isEmpty()) {
         resultValue = "anonymous";
     } else if (equalIgnoringCase(resultValue, "anonymous")) {
         resultValue = "anonymous";
     } else if (equalIgnoringCase(resultValue, "use-credentials")) {
         resultValue = "use-credentials";
     } else {
         resultValue = "anonymous";
     }
     v8SetReturnValueString(info, resultValue, info.GetIsolate());
 }
 
 static void corsSettingAttributeAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::corsSettingAttributeAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void limitedWithEmptyMissingInvalidAttributeAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     String resultValue = impl->fastGetAttribute(HTMLNames::limitedwithemptymissinginvalidattributeAttr);
     if (resultValue.isNull()) {
         resultValue = "missing";
     } else if (resultValue.isEmpty()) {
         resultValue = "empty";
     } else if (equalIgnoringCase(resultValue, "empty")) {
         resultValue = "empty";
     } else if (equalIgnoringCase(resultValue, "missing")) {
         resultValue = "missing";
     } else if (equalIgnoringCase(resultValue, "invalid")) {
         resultValue = "invalid";
     } else if (equalIgnoringCase(resultValue, "a-normal")) {
         resultValue = "a-normal";
     } else {
         resultValue = "invalid";
     }
     v8SetReturnValueString(info, resultValue, info.GetIsolate());
 }
 
 static void limitedWithEmptyMissingInvalidAttributeAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::limitedWithEmptyMissingInvalidAttributeAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void typedArrayAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueFast(info, WTF::getPtr(impl->typedArrayAttr()), impl);
 }
 
 static void typedArrayAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::typedArrayAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void typedArrayAttrAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_VOID(Float32Array*, cppValue, jsValue->IsFloat32Array() ? V8Float32Array::toNative(v8::Handle<v8::Float32Array>::Cast(jsValue)) : 0);
     impl->setTypedArrayAttr(WTF::getPtr(cppValue));
 }
 
 static void typedArrayAttrAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::typedArrayAttrAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void attrWithGetterExceptionAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
-    ExceptionState exceptionState(ExceptionState::GetterContext, "attrWithGetterException", "TestObject", info.Holder(), info.GetIsolate());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
+    ExceptionState exceptionState(ExceptionState::GetterContext, "attrWithGetterException", "TestObject", holder, info.GetIsolate());
     int jsValue = impl->attrWithGetterException(exceptionState);
     if (UNLIKELY(exceptionState.throwIfNeeded()))
         return;
     v8SetReturnValueInt(info, jsValue);
 }
 
 static void attrWithGetterExceptionAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::attrWithGetterExceptionAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void attrWithGetterExceptionAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    ExceptionState exceptionState(ExceptionState::SetterContext, "attrWithGetterException", "TestObject", info.Holder(), info.GetIsolate());
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    ExceptionState exceptionState(ExceptionState::SetterContext, "attrWithGetterException", "TestObject", holder, info.GetIsolate());
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_EXCEPTION_VOID(int, cppValue, toInt32(jsValue, exceptionState), exceptionState);
     impl->setAttrWithGetterException(cppValue);
 }
 
 static void attrWithGetterExceptionAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::attrWithGetterExceptionAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void attrWithSetterExceptionAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueInt(info, impl->attrWithSetterException());
 }
 
 static void attrWithSetterExceptionAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::attrWithSetterExceptionAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void attrWithSetterExceptionAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    ExceptionState exceptionState(ExceptionState::SetterContext, "attrWithSetterException", "TestObject", info.Holder(), info.GetIsolate());
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    ExceptionState exceptionState(ExceptionState::SetterContext, "attrWithSetterException", "TestObject", holder, info.GetIsolate());
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_EXCEPTION_VOID(int, cppValue, toInt32(jsValue, exceptionState), exceptionState);
     impl->setAttrWithSetterException(cppValue, exceptionState);
     exceptionState.throwIfNeeded();
 }
 
 static void attrWithSetterExceptionAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::attrWithSetterExceptionAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void stringAttrWithGetterExceptionAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
-    ExceptionState exceptionState(ExceptionState::GetterContext, "stringAttrWithGetterException", "TestObject", info.Holder(), info.GetIsolate());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
+    ExceptionState exceptionState(ExceptionState::GetterContext, "stringAttrWithGetterException", "TestObject", holder, info.GetIsolate());
     String jsValue = impl->stringAttrWithGetterException(exceptionState);
     if (UNLIKELY(exceptionState.throwIfNeeded()))
         return;
     v8SetReturnValueString(info, jsValue, info.GetIsolate());
 }
 
 static void stringAttrWithGetterExceptionAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::stringAttrWithGetterExceptionAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void stringAttrWithGetterExceptionAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_FOR_V8STRINGRESOURCE_VOID(V8StringResource<>, cppValue, jsValue);
     impl->setStringAttrWithGetterException(cppValue);
 }
 
 static void stringAttrWithGetterExceptionAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::stringAttrWithGetterExceptionAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void stringAttrWithSetterExceptionAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueString(info, impl->stringAttrWithSetterException(), info.GetIsolate());
 }
 
 static void stringAttrWithSetterExceptionAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::stringAttrWithSetterExceptionAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void stringAttrWithSetterExceptionAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    ExceptionState exceptionState(ExceptionState::SetterContext, "stringAttrWithSetterException", "TestObject", info.Holder(), info.GetIsolate());
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    ExceptionState exceptionState(ExceptionState::SetterContext, "stringAttrWithSetterException", "TestObject", holder, info.GetIsolate());
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_FOR_V8STRINGRESOURCE_VOID(V8StringResource<>, cppValue, jsValue);
     impl->setStringAttrWithSetterException(cppValue, exceptionState);
     exceptionState.throwIfNeeded();
 }
 
 static void stringAttrWithSetterExceptionAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::stringAttrWithSetterExceptionAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void customAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     V8TestObject::customAttrAttributeGetterCustom(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void customAttrAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     V8TestObject::customAttrAttributeSetterCustom(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void withExecutionContextAttributeAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     ExecutionContext* scriptContext = currentExecutionContext(info.GetIsolate());
     v8SetReturnValueFast(info, WTF::getPtr(impl->withExecutionContextAttribute(scriptContext)), impl);
 }
 
 static void withExecutionContextAttributeAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::withExecutionContextAttributeAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void withExecutionContextAttributeAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_VOID(TestObject*, cppValue, V8TestObject::toNativeWithTypeCheck(info.GetIsolate(), jsValue));
     ExecutionContext* scriptContext = currentExecutionContext(info.GetIsolate());
     impl->setWithExecutionContextAttribute(scriptContext, WTF::getPtr(cppValue));
 }
 
 static void withExecutionContextAttributeAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::withExecutionContextAttributeAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void withActiveWindowAndFirstWindowAttributeAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueFast(info, WTF::getPtr(impl->withActiveWindowAndFirstWindowAttribute()), impl);
 }
 
 static void withActiveWindowAndFirstWindowAttributeAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::withActiveWindowAndFirstWindowAttributeAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void withActiveWindowAndFirstWindowAttributeAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_VOID(TestObject*, cppValue, V8TestObject::toNativeWithTypeCheck(info.GetIsolate(), jsValue));
     impl->setWithActiveWindowAndFirstWindowAttribute(callingDOMWindow(info.GetIsolate()), enteredDOMWindow(info.GetIsolate()), WTF::getPtr(cppValue));
 }
 
 static void withActiveWindowAndFirstWindowAttributeAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::withActiveWindowAndFirstWindowAttributeAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void withScriptStateAttributeRaisesAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
-    ExceptionState exceptionState(ExceptionState::GetterContext, "withScriptStateAttributeRaises", "TestObject", info.Holder(), info.GetIsolate());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
+    ExceptionState exceptionState(ExceptionState::GetterContext, "withScriptStateAttributeRaises", "TestObject", holder, info.GetIsolate());
     RefPtr<TestObject> jsValue = impl->withScriptStateAttributeRaises(exceptionState);
     if (UNLIKELY(exceptionState.throwIfNeeded()))
         return;
     v8SetReturnValueFast(info, WTF::getPtr(jsValue.release()), impl);
 }
 
 static void withScriptStateAttributeRaisesAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::withScriptStateAttributeRaisesAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void withScriptStateAttributeRaisesAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_VOID(TestObject*, cppValue, V8TestObject::toNativeWithTypeCheck(info.GetIsolate(), jsValue));
     impl->setWithScriptStateAttributeRaises(WTF::getPtr(cppValue));
 }
 
 static void withScriptStateAttributeRaisesAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::withScriptStateAttributeRaisesAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void enforcedRangeByteAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueInt(info, impl->enforcedRangeByteAttr());
 }
 
 static void enforcedRangeByteAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::enforcedRangeByteAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void enforcedRangeByteAttrAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    ExceptionState exceptionState(ExceptionState::SetterContext, "enforcedRangeByteAttr", "TestObject", info.Holder(), info.GetIsolate());
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    ExceptionState exceptionState(ExceptionState::SetterContext, "enforcedRangeByteAttr", "TestObject", holder, info.GetIsolate());
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_EXCEPTION_VOID(int, cppValue, toInt8(jsValue, EnforceRange, exceptionState), exceptionState);
     impl->setEnforcedRangeByteAttr(cppValue);
 }
 
 static void enforcedRangeByteAttrAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::enforcedRangeByteAttrAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void enforcedRangeOctetAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueUnsigned(info, impl->enforcedRangeOctetAttr());
 }
 
 static void enforcedRangeOctetAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::enforcedRangeOctetAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void enforcedRangeOctetAttrAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    ExceptionState exceptionState(ExceptionState::SetterContext, "enforcedRangeOctetAttr", "TestObject", info.Holder(), info.GetIsolate());
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    ExceptionState exceptionState(ExceptionState::SetterContext, "enforcedRangeOctetAttr", "TestObject", holder, info.GetIsolate());
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_EXCEPTION_VOID(unsigned, cppValue, toUInt8(jsValue, EnforceRange, exceptionState), exceptionState);
     impl->setEnforcedRangeOctetAttr(cppValue);
 }
 
 static void enforcedRangeOctetAttrAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::enforcedRangeOctetAttrAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void enforcedRangeShortAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueInt(info, impl->enforcedRangeShortAttr());
 }
 
 static void enforcedRangeShortAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::enforcedRangeShortAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void enforcedRangeShortAttrAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    ExceptionState exceptionState(ExceptionState::SetterContext, "enforcedRangeShortAttr", "TestObject", info.Holder(), info.GetIsolate());
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    ExceptionState exceptionState(ExceptionState::SetterContext, "enforcedRangeShortAttr", "TestObject", holder, info.GetIsolate());
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_EXCEPTION_VOID(int, cppValue, toInt16(jsValue, EnforceRange, exceptionState), exceptionState);
     impl->setEnforcedRangeShortAttr(cppValue);
 }
 
 static void enforcedRangeShortAttrAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::enforcedRangeShortAttrAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void enforcedRangeUnsignedShortAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueUnsigned(info, impl->enforcedRangeUnsignedShortAttr());
 }
 
 static void enforcedRangeUnsignedShortAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::enforcedRangeUnsignedShortAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void enforcedRangeUnsignedShortAttrAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    ExceptionState exceptionState(ExceptionState::SetterContext, "enforcedRangeUnsignedShortAttr", "TestObject", info.Holder(), info.GetIsolate());
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    ExceptionState exceptionState(ExceptionState::SetterContext, "enforcedRangeUnsignedShortAttr", "TestObject", holder, info.GetIsolate());
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_EXCEPTION_VOID(unsigned, cppValue, toUInt16(jsValue, EnforceRange, exceptionState), exceptionState);
     impl->setEnforcedRangeUnsignedShortAttr(cppValue);
 }
 
 static void enforcedRangeUnsignedShortAttrAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::enforcedRangeUnsignedShortAttrAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void enforcedRangeLongAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueInt(info, impl->enforcedRangeLongAttr());
 }
 
 static void enforcedRangeLongAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::enforcedRangeLongAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void enforcedRangeLongAttrAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    ExceptionState exceptionState(ExceptionState::SetterContext, "enforcedRangeLongAttr", "TestObject", info.Holder(), info.GetIsolate());
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    ExceptionState exceptionState(ExceptionState::SetterContext, "enforcedRangeLongAttr", "TestObject", holder, info.GetIsolate());
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_EXCEPTION_VOID(int, cppValue, toInt32(jsValue, EnforceRange, exceptionState), exceptionState);
     impl->setEnforcedRangeLongAttr(cppValue);
 }
 
 static void enforcedRangeLongAttrAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::enforcedRangeLongAttrAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void enforcedRangeUnsignedLongAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueUnsigned(info, impl->enforcedRangeUnsignedLongAttr());
 }
 
 static void enforcedRangeUnsignedLongAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::enforcedRangeUnsignedLongAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void enforcedRangeUnsignedLongAttrAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    ExceptionState exceptionState(ExceptionState::SetterContext, "enforcedRangeUnsignedLongAttr", "TestObject", info.Holder(), info.GetIsolate());
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    ExceptionState exceptionState(ExceptionState::SetterContext, "enforcedRangeUnsignedLongAttr", "TestObject", holder, info.GetIsolate());
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_EXCEPTION_VOID(unsigned, cppValue, toUInt32(jsValue, EnforceRange, exceptionState), exceptionState);
     impl->setEnforcedRangeUnsignedLongAttr(cppValue);
 }
 
 static void enforcedRangeUnsignedLongAttrAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::enforcedRangeUnsignedLongAttrAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void enforcedRangeLongLongAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValue(info, static_cast<double>(impl->enforcedRangeLongLongAttr()));
 }
 
 static void enforcedRangeLongLongAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::enforcedRangeLongLongAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void enforcedRangeLongLongAttrAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    ExceptionState exceptionState(ExceptionState::SetterContext, "enforcedRangeLongLongAttr", "TestObject", info.Holder(), info.GetIsolate());
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    ExceptionState exceptionState(ExceptionState::SetterContext, "enforcedRangeLongLongAttr", "TestObject", holder, info.GetIsolate());
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_EXCEPTION_VOID(long long, cppValue, toInt64(jsValue, EnforceRange, exceptionState), exceptionState);
     impl->setEnforcedRangeLongLongAttr(cppValue);
 }
 
 static void enforcedRangeLongLongAttrAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::enforcedRangeLongLongAttrAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void enforcedRangeUnsignedLongLongAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValue(info, static_cast<double>(impl->enforcedRangeUnsignedLongLongAttr()));
 }
 
 static void enforcedRangeUnsignedLongLongAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::enforcedRangeUnsignedLongLongAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void enforcedRangeUnsignedLongLongAttrAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    ExceptionState exceptionState(ExceptionState::SetterContext, "enforcedRangeUnsignedLongLongAttr", "TestObject", info.Holder(), info.GetIsolate());
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    ExceptionState exceptionState(ExceptionState::SetterContext, "enforcedRangeUnsignedLongLongAttr", "TestObject", holder, info.GetIsolate());
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_EXCEPTION_VOID(unsigned long long, cppValue, toUInt64(jsValue, EnforceRange, exceptionState), exceptionState);
     impl->setEnforcedRangeUnsignedLongLongAttr(cppValue);
 }
 
 static void enforcedRangeUnsignedLongLongAttrAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::enforcedRangeUnsignedLongLongAttrAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 #if ENABLE(Condition1)
 static void conditionalAttr1AttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueInt(info, impl->conditionalAttr1());
 }
 #endif // ENABLE(Condition1)
 
 #if ENABLE(Condition1)
 static void conditionalAttr1AttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::conditionalAttr1AttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 #endif // ENABLE(Condition1)
 
 #if ENABLE(Condition1)
 static void conditionalAttr1AttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    ExceptionState exceptionState(ExceptionState::SetterContext, "conditionalAttr1", "TestObject", info.Holder(), info.GetIsolate());
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    ExceptionState exceptionState(ExceptionState::SetterContext, "conditionalAttr1", "TestObject", holder, info.GetIsolate());
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_EXCEPTION_VOID(int, cppValue, toInt32(jsValue, exceptionState), exceptionState);
     impl->setConditionalAttr1(cppValue);
 }
 #endif // ENABLE(Condition1)
 
 #if ENABLE(Condition1)
 static void conditionalAttr1AttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::conditionalAttr1AttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 #endif // ENABLE(Condition1)
 
 #if ENABLE(Condition1) && ENABLE(Condition2)
 static void conditionalAttr2AttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueInt(info, impl->conditionalAttr2());
 }
 #endif // ENABLE(Condition1) && ENABLE(Condition2)
 
 #if ENABLE(Condition1) && ENABLE(Condition2)
 static void conditionalAttr2AttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::conditionalAttr2AttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 #endif // ENABLE(Condition1) && ENABLE(Condition2)
 
 #if ENABLE(Condition1) && ENABLE(Condition2)
 static void conditionalAttr2AttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    ExceptionState exceptionState(ExceptionState::SetterContext, "conditionalAttr2", "TestObject", info.Holder(), info.GetIsolate());
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    ExceptionState exceptionState(ExceptionState::SetterContext, "conditionalAttr2", "TestObject", holder, info.GetIsolate());
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_EXCEPTION_VOID(int, cppValue, toInt32(jsValue, exceptionState), exceptionState);
     impl->setConditionalAttr2(cppValue);
 }
 #endif // ENABLE(Condition1) && ENABLE(Condition2)
 
 #if ENABLE(Condition1) && ENABLE(Condition2)
 static void conditionalAttr2AttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::conditionalAttr2AttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 #endif // ENABLE(Condition1) && ENABLE(Condition2)
 
 #if ENABLE(Condition1) || ENABLE(Condition2) || ENABLE(Condition3)
 static void conditionalAttr3AttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueInt(info, impl->conditionalAttr3());
 }
 #endif // ENABLE(Condition1) || ENABLE(Condition2) || ENABLE(Condition3)
 
 #if ENABLE(Condition1) || ENABLE(Condition2) || ENABLE(Condition3)
 static void conditionalAttr3AttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::conditionalAttr3AttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 #endif // ENABLE(Condition1) || ENABLE(Condition2) || ENABLE(Condition3)
 
 #if ENABLE(Condition1) || ENABLE(Condition2) || ENABLE(Condition3)
 static void conditionalAttr3AttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    ExceptionState exceptionState(ExceptionState::SetterContext, "conditionalAttr3", "TestObject", info.Holder(), info.GetIsolate());
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    ExceptionState exceptionState(ExceptionState::SetterContext, "conditionalAttr3", "TestObject", holder, info.GetIsolate());
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_EXCEPTION_VOID(int, cppValue, toInt32(jsValue, exceptionState), exceptionState);
     impl->setConditionalAttr3(cppValue);
 }
 #endif // ENABLE(Condition1) || ENABLE(Condition2) || ENABLE(Condition3)
 
 #if ENABLE(Condition1) || ENABLE(Condition2) || ENABLE(Condition3)
 static void conditionalAttr3AttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::conditionalAttr3AttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 #endif // ENABLE(Condition1) || ENABLE(Condition2) || ENABLE(Condition3)
 
 static void cachedAttribute1AttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValue(info, impl->cachedAttribute1().v8Value());
 }
 
 static void cachedAttribute1AttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::cachedAttribute1AttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void cachedAttribute2AttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValue(info, impl->cachedAttribute2().v8Value());
 }
 
 static void cachedAttribute2AttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::cachedAttribute2AttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void cachedDirtyableAttributeAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
+    v8::Handle<v8::Object> holder = info.Holder();
     v8::Handle<v8::String> propertyName = v8AtomicString(info.GetIsolate(), "cachedDirtyableAttribute");
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    TestObject* impl = V8TestObject::toNative(holder);
     if (!impl->isValueDirty()) {
-        v8::Handle<v8::Value> jsValue = V8HiddenValue::getHiddenValue(info.GetIsolate(), info.Holder(), propertyName);
+        v8::Handle<v8::Value> jsValue = V8HiddenValue::getHiddenValue(info.GetIsolate(), holder, propertyName);
         if (!jsValue.IsEmpty()) {
             v8SetReturnValue(info, jsValue);
             return;
         }
     }
     ScriptValue jsValue = impl->cachedDirtyableAttribute();
-    V8HiddenValue::setHiddenValue(info.GetIsolate(), info.Holder(), propertyName, jsValue.v8Value());
+    V8HiddenValue::setHiddenValue(info.GetIsolate(), holder, propertyName, jsValue.v8Value());
     v8SetReturnValue(info, jsValue.v8Value());
 }
 
 static void cachedDirtyableAttributeAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::cachedDirtyableAttributeAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void cachedDirtyableAttributeRaisesAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
+    v8::Handle<v8::Object> holder = info.Holder();
     v8::Handle<v8::String> propertyName = v8AtomicString(info.GetIsolate(), "cachedDirtyableAttributeRaises");
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    TestObject* impl = V8TestObject::toNative(holder);
     if (!impl->isValueDirty()) {
-        v8::Handle<v8::Value> jsValue = V8HiddenValue::getHiddenValue(info.GetIsolate(), info.Holder(), propertyName);
+        v8::Handle<v8::Value> jsValue = V8HiddenValue::getHiddenValue(info.GetIsolate(), holder, propertyName);
         if (!jsValue.IsEmpty()) {
             v8SetReturnValue(info, jsValue);
             return;
         }
     }
-    ExceptionState exceptionState(ExceptionState::GetterContext, "cachedDirtyableAttributeRaises", "TestObject", info.Holder(), info.GetIsolate());
+    ExceptionState exceptionState(ExceptionState::GetterContext, "cachedDirtyableAttributeRaises", "TestObject", holder, info.GetIsolate());
     ScriptValue jsValue = impl->cachedDirtyableAttributeRaises(exceptionState);
     if (UNLIKELY(exceptionState.throwIfNeeded()))
         return;
-    V8HiddenValue::setHiddenValue(info.GetIsolate(), info.Holder(), propertyName, jsValue.v8Value());
+    V8HiddenValue::setHiddenValue(info.GetIsolate(), holder, propertyName, jsValue.v8Value());
     v8SetReturnValue(info, jsValue.v8Value());
 }
 
 static void cachedDirtyableAttributeRaisesAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::cachedDirtyableAttributeRaisesAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void anyAttributeAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValue(info, impl->anyAttribute().v8Value());
 }
 
 static void anyAttributeAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::anyAttributeAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void anyAttributeAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_VOID(ScriptValue, cppValue, ScriptValue(jsValue, info.GetIsolate()));
     impl->setAnyAttribute(cppValue);
 }
 
 static void anyAttributeAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::anyAttributeAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void callbackFunctionAttributeAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValue(info, impl->callbackFunctionAttribute().v8Value());
 }
 
 static void callbackFunctionAttributeAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::callbackFunctionAttributeAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void callbackFunctionAttributeAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_VOID(ScriptValue, cppValue, ScriptValue(jsValue, info.GetIsolate()));
     impl->setCallbackFunctionAttribute(cppValue);
 }
 
 static void callbackFunctionAttributeAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::callbackFunctionAttributeAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void enabledAtRuntimeAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueInt(info, impl->enabledAtRuntimeAttr());
 }
 
 static void enabledAtRuntimeAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::enabledAtRuntimeAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void enabledAtRuntimeAttrAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    ExceptionState exceptionState(ExceptionState::SetterContext, "enabledAtRuntimeAttr", "TestObject", info.Holder(), info.GetIsolate());
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    ExceptionState exceptionState(ExceptionState::SetterContext, "enabledAtRuntimeAttr", "TestObject", holder, info.GetIsolate());
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_EXCEPTION_VOID(int, cppValue, toInt32(jsValue, exceptionState), exceptionState);
     impl->setEnabledAtRuntimeAttr(cppValue);
 }
 
 static void enabledAtRuntimeAttrAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::enabledAtRuntimeAttrAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void enabledPerContextAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueInt(info, impl->enabledPerContextAttr());
 }
 
 static void enabledPerContextAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::enabledPerContextAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void enabledPerContextAttrAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    ExceptionState exceptionState(ExceptionState::SetterContext, "enabledPerContextAttr", "TestObject", info.Holder(), info.GetIsolate());
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    ExceptionState exceptionState(ExceptionState::SetterContext, "enabledPerContextAttr", "TestObject", holder, info.GetIsolate());
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_EXCEPTION_VOID(int, cppValue, toInt32(jsValue, exceptionState), exceptionState);
     impl->setEnabledPerContextAttr(cppValue);
 }
 
 static void enabledPerContextAttrAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::enabledPerContextAttrAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void floatArrayAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValue(info, v8Array(impl->floatArray(), info.GetIsolate()));
 }
 
 static void floatArrayAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::floatArrayAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void floatArrayAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_VOID(Vector<float>, cppValue, toNativeArray<float>(jsValue, 0, info.GetIsolate()));
     impl->setFloatArray(cppValue);
 }
 
 static void floatArrayAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::floatArrayAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void doubleArrayAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValue(info, v8Array(impl->doubleArray(), info.GetIsolate()));
 }
 
 static void doubleArrayAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::doubleArrayAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void doubleArrayAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_VOID(Vector<double>, cppValue, toNativeArray<double>(jsValue, 0, info.GetIsolate()));
     impl->setDoubleArray(cppValue);
 }
 
 static void doubleArrayAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::doubleArrayAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void messagePortArrayAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValue(info, v8Array(impl->messagePortArray(), info.GetIsolate()));
 }
 
 static void messagePortArrayAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::messagePortArrayAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void messagePortArrayAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_VOID(Vector<RefPtr<MessagePort> >, cppValue, (toRefPtrNativeArray<MessagePort, V8MessagePort>(jsValue, 0, info.GetIsolate())));
     impl->setMessagePortArray(cppValue);
 }
 
 static void messagePortArrayAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::messagePortArrayAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void contentDocumentAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
-    ExceptionState exceptionState(ExceptionState::GetterContext, "contentDocument", "TestObject", info.Holder(), info.GetIsolate());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
+    ExceptionState exceptionState(ExceptionState::GetterContext, "contentDocument", "TestObject", holder, info.GetIsolate());
     if (!BindingSecurity::shouldAllowAccessToNode(info.GetIsolate(), impl->contentDocument(), exceptionState)) {
         v8SetReturnValueNull(info);
         exceptionState.throwIfNeeded();
         return;
     }
     v8SetReturnValueFast(info, WTF::getPtr(impl->contentDocument()), impl);
 }
 
 static void contentDocumentAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::contentDocumentAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void strawberryAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueInt(info, impl->blueberry());
 }
 
 static void strawberryAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::strawberryAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void strawberryAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    ExceptionState exceptionState(ExceptionState::SetterContext, "strawberry", "TestObject", info.Holder(), info.GetIsolate());
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    ExceptionState exceptionState(ExceptionState::SetterContext, "strawberry", "TestObject", holder, info.GetIsolate());
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_EXCEPTION_VOID(int, cppValue, toInt32(jsValue, exceptionState), exceptionState);
     impl->setBlueberry(cppValue);
 }
 
 static void strawberryAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::strawberryAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void strictFloatAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValue(info, impl->strictFloat());
 }
 
 static void strictFloatAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::strictFloatAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void strictFloatAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_VOID(float, cppValue, static_cast<float>(jsValue->NumberValue()));
     impl->setStrictFloat(cppValue);
 }
 
 static void strictFloatAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::strictFloatAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void replaceableAttributeAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueInt(info, impl->replaceableAttribute());
 }
 
 static void replaceableAttributeAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::replaceableAttributeAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void nullableDoubleAttributeAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     bool isNull = false;
     double jsValue = impl->nullableDoubleAttribute(isNull);
     if (isNull) {
         v8SetReturnValueNull(info);
         return;
     }
     v8SetReturnValue(info, jsValue);
 }
 
 static void nullableDoubleAttributeAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::nullableDoubleAttributeAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void nullableLongAttributeAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     bool isNull = false;
     int jsValue = impl->nullableLongAttribute(isNull);
     if (isNull) {
         v8SetReturnValueNull(info);
         return;
     }
     v8SetReturnValueInt(info, jsValue);
 }
 
 static void nullableLongAttributeAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::nullableLongAttributeAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void nullableBooleanAttributeAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     bool isNull = false;
     bool jsValue = impl->nullableBooleanAttribute(isNull);
     if (isNull) {
         v8SetReturnValueNull(info);
         return;
     }
     v8SetReturnValueBool(info, jsValue);
 }
 
 static void nullableBooleanAttributeAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::nullableBooleanAttributeAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void nullableStringAttributeAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     bool isNull = false;
     String jsValue = impl->nullableStringAttribute(isNull);
     if (isNull) {
         v8SetReturnValueNull(info);
         return;
     }
     v8SetReturnValueString(info, jsValue, info.GetIsolate());
 }
 
 static void nullableStringAttributeAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::nullableStringAttributeAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void nullableLongSettableAttributeAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     bool isNull = false;
     int jsValue = impl->nullableLongSettableAttribute(isNull);
     if (isNull) {
         v8SetReturnValueNull(info);
         return;
     }
     v8SetReturnValueInt(info, jsValue);
 }
 
 static void nullableLongSettableAttributeAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::nullableLongSettableAttributeAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void nullableLongSettableAttributeAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    ExceptionState exceptionState(ExceptionState::SetterContext, "nullableLongSettableAttribute", "TestObject", info.Holder(), info.GetIsolate());
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    ExceptionState exceptionState(ExceptionState::SetterContext, "nullableLongSettableAttribute", "TestObject", holder, info.GetIsolate());
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_EXCEPTION_VOID(int, cppValue, toInt32(jsValue, exceptionState), exceptionState);
     impl->setNullableLongSettableAttribute(cppValue);
 }
 
 static void nullableLongSettableAttributeAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::nullableLongSettableAttributeAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void perWorldReadOnlyAttributeAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     RefPtr<TestObject> result(impl->perWorldReadOnlyAttribute());
     if (result && DOMDataStore::setReturnValueFromWrapper<V8TestObject>(info.GetReturnValue(), result.get()))
         return;
-    v8::Handle<v8::Value> wrapper = toV8(result.get(), info.Holder(), info.GetIsolate());
+    v8::Handle<v8::Value> wrapper = toV8(result.get(), holder, info.GetIsolate());
     if (!wrapper.IsEmpty()) {
-        V8HiddenValue::setHiddenValue(info.GetIsolate(), info.Holder(), v8AtomicString(info.GetIsolate(), "perWorldReadOnlyAttribute"), wrapper);
+        V8HiddenValue::setHiddenValue(info.GetIsolate(), holder, v8AtomicString(info.GetIsolate(), "perWorldReadOnlyAttribute"), wrapper);
         v8SetReturnValue(info, wrapper);
     }
 }
 
 static void perWorldReadOnlyAttributeAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::perWorldReadOnlyAttributeAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void perWorldReadOnlyAttributeAttributeGetterForMainWorld(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     RefPtr<TestObject> result(impl->perWorldReadOnlyAttribute());
     if (result && DOMDataStore::setReturnValueFromWrapperForMainWorld<V8TestObject>(info.GetReturnValue(), result.get()))
         return;
-    v8::Handle<v8::Value> wrapper = toV8(result.get(), info.Holder(), info.GetIsolate());
+    v8::Handle<v8::Value> wrapper = toV8(result.get(), holder, info.GetIsolate());
     if (!wrapper.IsEmpty()) {
-        V8HiddenValue::setHiddenValue(info.GetIsolate(), info.Holder(), v8AtomicString(info.GetIsolate(), "perWorldReadOnlyAttribute"), wrapper);
+        V8HiddenValue::setHiddenValue(info.GetIsolate(), holder, v8AtomicString(info.GetIsolate(), "perWorldReadOnlyAttribute"), wrapper);
         v8SetReturnValue(info, wrapper);
     }
 }
 
 static void perWorldReadOnlyAttributeAttributeGetterCallbackForMainWorld(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::perWorldReadOnlyAttributeAttributeGetterForMainWorld(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void perWorldAttributeAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueFast(info, WTF::getPtr(impl->perWorldAttribute()), impl);
 }
 
 static void perWorldAttributeAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::perWorldAttributeAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void perWorldAttributeAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_VOID(TestObject*, cppValue, V8TestObject::toNativeWithTypeCheck(info.GetIsolate(), jsValue));
     impl->setPerWorldAttribute(WTF::getPtr(cppValue));
 }
 
 static void perWorldAttributeAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::perWorldAttributeAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void perWorldAttributeAttributeGetterForMainWorld(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueForMainWorld(info, WTF::getPtr(impl->perWorldAttribute()));
 }
 
 static void perWorldAttributeAttributeGetterCallbackForMainWorld(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::perWorldAttributeAttributeGetterForMainWorld(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void perWorldAttributeAttributeSetterForMainWorld(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_VOID(TestObject*, cppValue, V8TestObject::toNativeWithTypeCheck(info.GetIsolate(), jsValue));
     impl->setPerWorldAttribute(WTF::getPtr(cppValue));
 }
 
 static void perWorldAttributeAttributeSetterCallbackForMainWorld(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::perWorldAttributeAttributeSetterForMainWorld(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void activityLoggedAttr1AttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueInt(info, impl->activityLoggedAttr1());
 }
 
 static void activityLoggedAttr1AttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     V8PerContextData* contextData = V8PerContextData::from(info.GetIsolate()->GetCurrentContext());
     if (contextData && contextData->activityLogger())
         contextData->activityLogger()->log("TestObject.activityLoggedAttr1", 0, 0, "Getter");
     TestObjectV8Internal::activityLoggedAttr1AttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void activityLoggedAttr1AttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    ExceptionState exceptionState(ExceptionState::SetterContext, "activityLoggedAttr1", "TestObject", info.Holder(), info.GetIsolate());
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    ExceptionState exceptionState(ExceptionState::SetterContext, "activityLoggedAttr1", "TestObject", holder, info.GetIsolate());
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_EXCEPTION_VOID(int, cppValue, toInt32(jsValue, exceptionState), exceptionState);
     impl->setActivityLoggedAttr1(cppValue);
 }
 
 static void activityLoggedAttr1AttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     V8PerContextData* contextData = V8PerContextData::from(info.GetIsolate()->GetCurrentContext());
     if (contextData && contextData->activityLogger()) {
         v8::Handle<v8::Value> loggerArg[] = { jsValue };
         contextData->activityLogger()->log("TestObject.activityLoggedAttr1", 1, &loggerArg[0], "Setter");
     }
     TestObjectV8Internal::activityLoggedAttr1AttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void activityLoggedAttr2AttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueInt(info, impl->activityLoggedAttr2());
 }
 
 static void activityLoggedAttr2AttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     V8PerContextData* contextData = V8PerContextData::from(info.GetIsolate()->GetCurrentContext());
     if (contextData && contextData->activityLogger())
         contextData->activityLogger()->log("TestObject.activityLoggedAttr2", 0, 0, "Getter");
     TestObjectV8Internal::activityLoggedAttr2AttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void activityLoggedAttr2AttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    ExceptionState exceptionState(ExceptionState::SetterContext, "activityLoggedAttr2", "TestObject", info.Holder(), info.GetIsolate());
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    ExceptionState exceptionState(ExceptionState::SetterContext, "activityLoggedAttr2", "TestObject", holder, info.GetIsolate());
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_EXCEPTION_VOID(int, cppValue, toInt32(jsValue, exceptionState), exceptionState);
     impl->setActivityLoggedAttr2(cppValue);
 }
 
 static void activityLoggedAttr2AttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     V8PerContextData* contextData = V8PerContextData::from(info.GetIsolate()->GetCurrentContext());
     if (contextData && contextData->activityLogger()) {
         v8::Handle<v8::Value> loggerArg[] = { jsValue };
         contextData->activityLogger()->log("TestObject.activityLoggedAttr2", 1, &loggerArg[0], "Setter");
     }
     TestObjectV8Internal::activityLoggedAttr2AttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void activityLoggedAttr2AttributeGetterForMainWorld(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueInt(info, impl->activityLoggedAttr2());
 }
 
 static void activityLoggedAttr2AttributeGetterCallbackForMainWorld(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     V8PerContextData* contextData = V8PerContextData::from(info.GetIsolate()->GetCurrentContext());
     if (contextData && contextData->activityLogger())
         contextData->activityLogger()->log("TestObject.activityLoggedAttr2", 0, 0, "Getter");
     TestObjectV8Internal::activityLoggedAttr2AttributeGetterForMainWorld(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void activityLoggedAttr2AttributeSetterForMainWorld(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    ExceptionState exceptionState(ExceptionState::SetterContext, "activityLoggedAttr2", "TestObject", info.Holder(), info.GetIsolate());
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    ExceptionState exceptionState(ExceptionState::SetterContext, "activityLoggedAttr2", "TestObject", holder, info.GetIsolate());
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_EXCEPTION_VOID(int, cppValue, toInt32(jsValue, exceptionState), exceptionState);
     impl->setActivityLoggedAttr2(cppValue);
 }
 
 static void activityLoggedAttr2AttributeSetterCallbackForMainWorld(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     V8PerContextData* contextData = V8PerContextData::from(info.GetIsolate()->GetCurrentContext());
     if (contextData && contextData->activityLogger()) {
         v8::Handle<v8::Value> loggerArg[] = { jsValue };
         contextData->activityLogger()->log("TestObject.activityLoggedAttr2", 1, &loggerArg[0], "Setter");
     }
     TestObjectV8Internal::activityLoggedAttr2AttributeSetterForMainWorld(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void activityLoggedInIsolatedWorldsAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueInt(info, impl->activityLoggedInIsolatedWorldsAttr());
 }
 
 static void activityLoggedInIsolatedWorldsAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     V8PerContextData* contextData = V8PerContextData::from(info.GetIsolate()->GetCurrentContext());
     if (contextData && contextData->activityLogger())
         contextData->activityLogger()->log("TestObject.activityLoggedInIsolatedWorldsAttr", 0, 0, "Getter");
     TestObjectV8Internal::activityLoggedInIsolatedWorldsAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void activityLoggedInIsolatedWorldsAttrAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    ExceptionState exceptionState(ExceptionState::SetterContext, "activityLoggedInIsolatedWorldsAttr", "TestObject", info.Holder(), info.GetIsolate());
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    ExceptionState exceptionState(ExceptionState::SetterContext, "activityLoggedInIsolatedWorldsAttr", "TestObject", holder, info.GetIsolate());
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_EXCEPTION_VOID(int, cppValue, toInt32(jsValue, exceptionState), exceptionState);
     impl->setActivityLoggedInIsolatedWorldsAttr(cppValue);
 }
 
 static void activityLoggedInIsolatedWorldsAttrAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     V8PerContextData* contextData = V8PerContextData::from(info.GetIsolate()->GetCurrentContext());
     if (contextData && contextData->activityLogger()) {
         v8::Handle<v8::Value> loggerArg[] = { jsValue };
         contextData->activityLogger()->log("TestObject.activityLoggedInIsolatedWorldsAttr", 1, &loggerArg[0], "Setter");
     }
     TestObjectV8Internal::activityLoggedInIsolatedWorldsAttrAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void activityLoggedInIsolatedWorldsAttrAttributeGetterForMainWorld(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueInt(info, impl->activityLoggedInIsolatedWorldsAttr());
 }
 
 static void activityLoggedInIsolatedWorldsAttrAttributeGetterCallbackForMainWorld(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::activityLoggedInIsolatedWorldsAttrAttributeGetterForMainWorld(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void activityLoggedInIsolatedWorldsAttrAttributeSetterForMainWorld(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    ExceptionState exceptionState(ExceptionState::SetterContext, "activityLoggedInIsolatedWorldsAttr", "TestObject", info.Holder(), info.GetIsolate());
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    ExceptionState exceptionState(ExceptionState::SetterContext, "activityLoggedInIsolatedWorldsAttr", "TestObject", holder, info.GetIsolate());
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_EXCEPTION_VOID(int, cppValue, toInt32(jsValue, exceptionState), exceptionState);
     impl->setActivityLoggedInIsolatedWorldsAttr(cppValue);
 }
 
 static void activityLoggedInIsolatedWorldsAttrAttributeSetterCallbackForMainWorld(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::activityLoggedInIsolatedWorldsAttrAttributeSetterForMainWorld(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void activityLoggedAttrSetter1AttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueInt(info, impl->activityLoggedAttrSetter1());
 }
 
 static void activityLoggedAttrSetter1AttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::activityLoggedAttrSetter1AttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void activityLoggedAttrSetter1AttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    ExceptionState exceptionState(ExceptionState::SetterContext, "activityLoggedAttrSetter1", "TestObject", info.Holder(), info.GetIsolate());
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    ExceptionState exceptionState(ExceptionState::SetterContext, "activityLoggedAttrSetter1", "TestObject", holder, info.GetIsolate());
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_EXCEPTION_VOID(int, cppValue, toInt32(jsValue, exceptionState), exceptionState);
     impl->setActivityLoggedAttrSetter1(cppValue);
 }
 
 static void activityLoggedAttrSetter1AttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     V8PerContextData* contextData = V8PerContextData::from(info.GetIsolate()->GetCurrentContext());
     if (contextData && contextData->activityLogger()) {
         v8::Handle<v8::Value> loggerArg[] = { jsValue };
         contextData->activityLogger()->log("TestObject.activityLoggedAttrSetter1", 1, &loggerArg[0], "Setter");
     }
     TestObjectV8Internal::activityLoggedAttrSetter1AttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void activityLoggedAttrSetter2AttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueInt(info, impl->activityLoggedAttrSetter2());
 }
 
 static void activityLoggedAttrSetter2AttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::activityLoggedAttrSetter2AttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void activityLoggedAttrSetter2AttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    ExceptionState exceptionState(ExceptionState::SetterContext, "activityLoggedAttrSetter2", "TestObject", info.Holder(), info.GetIsolate());
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    ExceptionState exceptionState(ExceptionState::SetterContext, "activityLoggedAttrSetter2", "TestObject", holder, info.GetIsolate());
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_EXCEPTION_VOID(int, cppValue, toInt32(jsValue, exceptionState), exceptionState);
     impl->setActivityLoggedAttrSetter2(cppValue);
 }
 
 static void activityLoggedAttrSetter2AttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     V8PerContextData* contextData = V8PerContextData::from(info.GetIsolate()->GetCurrentContext());
     if (contextData && contextData->activityLogger()) {
         v8::Handle<v8::Value> loggerArg[] = { jsValue };
         contextData->activityLogger()->log("TestObject.activityLoggedAttrSetter2", 1, &loggerArg[0], "Setter");
     }
     TestObjectV8Internal::activityLoggedAttrSetter2AttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void activityLoggedAttrSetter2AttributeGetterForMainWorld(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueInt(info, impl->activityLoggedAttrSetter2());
 }
 
 static void activityLoggedAttrSetter2AttributeGetterCallbackForMainWorld(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::activityLoggedAttrSetter2AttributeGetterForMainWorld(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void activityLoggedAttrSetter2AttributeSetterForMainWorld(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    ExceptionState exceptionState(ExceptionState::SetterContext, "activityLoggedAttrSetter2", "TestObject", info.Holder(), info.GetIsolate());
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    ExceptionState exceptionState(ExceptionState::SetterContext, "activityLoggedAttrSetter2", "TestObject", holder, info.GetIsolate());
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_EXCEPTION_VOID(int, cppValue, toInt32(jsValue, exceptionState), exceptionState);
     impl->setActivityLoggedAttrSetter2(cppValue);
 }
 
 static void activityLoggedAttrSetter2AttributeSetterCallbackForMainWorld(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     V8PerContextData* contextData = V8PerContextData::from(info.GetIsolate()->GetCurrentContext());
     if (contextData && contextData->activityLogger()) {
         v8::Handle<v8::Value> loggerArg[] = { jsValue };
         contextData->activityLogger()->log("TestObject.activityLoggedAttrSetter2", 1, &loggerArg[0], "Setter");
     }
     TestObjectV8Internal::activityLoggedAttrSetter2AttributeSetterForMainWorld(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void activityLoggedInIsolatedWorldsAttrSetterAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueInt(info, impl->activityLoggedInIsolatedWorldsAttrSetter());
 }
 
 static void activityLoggedInIsolatedWorldsAttrSetterAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::activityLoggedInIsolatedWorldsAttrSetterAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void activityLoggedInIsolatedWorldsAttrSetterAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    ExceptionState exceptionState(ExceptionState::SetterContext, "activityLoggedInIsolatedWorldsAttrSetter", "TestObject", info.Holder(), info.GetIsolate());
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    ExceptionState exceptionState(ExceptionState::SetterContext, "activityLoggedInIsolatedWorldsAttrSetter", "TestObject", holder, info.GetIsolate());
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_EXCEPTION_VOID(int, cppValue, toInt32(jsValue, exceptionState), exceptionState);
     impl->setActivityLoggedInIsolatedWorldsAttrSetter(cppValue);
 }
 
 static void activityLoggedInIsolatedWorldsAttrSetterAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     V8PerContextData* contextData = V8PerContextData::from(info.GetIsolate()->GetCurrentContext());
     if (contextData && contextData->activityLogger()) {
         v8::Handle<v8::Value> loggerArg[] = { jsValue };
         contextData->activityLogger()->log("TestObject.activityLoggedInIsolatedWorldsAttrSetter", 1, &loggerArg[0], "Setter");
     }
     TestObjectV8Internal::activityLoggedInIsolatedWorldsAttrSetterAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void activityLoggedInIsolatedWorldsAttrSetterAttributeGetterForMainWorld(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueInt(info, impl->activityLoggedInIsolatedWorldsAttrSetter());
 }
 
 static void activityLoggedInIsolatedWorldsAttrSetterAttributeGetterCallbackForMainWorld(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::activityLoggedInIsolatedWorldsAttrSetterAttributeGetterForMainWorld(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void activityLoggedInIsolatedWorldsAttrSetterAttributeSetterForMainWorld(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    ExceptionState exceptionState(ExceptionState::SetterContext, "activityLoggedInIsolatedWorldsAttrSetter", "TestObject", info.Holder(), info.GetIsolate());
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    ExceptionState exceptionState(ExceptionState::SetterContext, "activityLoggedInIsolatedWorldsAttrSetter", "TestObject", holder, info.GetIsolate());
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_EXCEPTION_VOID(int, cppValue, toInt32(jsValue, exceptionState), exceptionState);
     impl->setActivityLoggedInIsolatedWorldsAttrSetter(cppValue);
 }
 
 static void activityLoggedInIsolatedWorldsAttrSetterAttributeSetterCallbackForMainWorld(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::activityLoggedInIsolatedWorldsAttrSetterAttributeSetterForMainWorld(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void activityLoggedAttrGetter1AttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueInt(info, impl->activityLoggedAttrGetter1());
 }
 
 static void activityLoggedAttrGetter1AttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     V8PerContextData* contextData = V8PerContextData::from(info.GetIsolate()->GetCurrentContext());
     if (contextData && contextData->activityLogger())
         contextData->activityLogger()->log("TestObject.activityLoggedAttrGetter1", 0, 0, "Getter");
     TestObjectV8Internal::activityLoggedAttrGetter1AttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void activityLoggedAttrGetter1AttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    ExceptionState exceptionState(ExceptionState::SetterContext, "activityLoggedAttrGetter1", "TestObject", info.Holder(), info.GetIsolate());
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    ExceptionState exceptionState(ExceptionState::SetterContext, "activityLoggedAttrGetter1", "TestObject", holder, info.GetIsolate());
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_EXCEPTION_VOID(int, cppValue, toInt32(jsValue, exceptionState), exceptionState);
     impl->setActivityLoggedAttrGetter1(cppValue);
 }
 
 static void activityLoggedAttrGetter1AttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::activityLoggedAttrGetter1AttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void activityLoggedAttrGetter2AttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueInt(info, impl->activityLoggedAttrGetter2());
 }
 
 static void activityLoggedAttrGetter2AttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     V8PerContextData* contextData = V8PerContextData::from(info.GetIsolate()->GetCurrentContext());
     if (contextData && contextData->activityLogger())
         contextData->activityLogger()->log("TestObject.activityLoggedAttrGetter2", 0, 0, "Getter");
     TestObjectV8Internal::activityLoggedAttrGetter2AttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void activityLoggedAttrGetter2AttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    ExceptionState exceptionState(ExceptionState::SetterContext, "activityLoggedAttrGetter2", "TestObject", info.Holder(), info.GetIsolate());
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    ExceptionState exceptionState(ExceptionState::SetterContext, "activityLoggedAttrGetter2", "TestObject", holder, info.GetIsolate());
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_EXCEPTION_VOID(int, cppValue, toInt32(jsValue, exceptionState), exceptionState);
     impl->setActivityLoggedAttrGetter2(cppValue);
 }
 
 static void activityLoggedAttrGetter2AttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::activityLoggedAttrGetter2AttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void activityLoggedAttrGetter2AttributeGetterForMainWorld(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueInt(info, impl->activityLoggedAttrGetter2());
 }
 
 static void activityLoggedAttrGetter2AttributeGetterCallbackForMainWorld(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     V8PerContextData* contextData = V8PerContextData::from(info.GetIsolate()->GetCurrentContext());
     if (contextData && contextData->activityLogger())
         contextData->activityLogger()->log("TestObject.activityLoggedAttrGetter2", 0, 0, "Getter");
     TestObjectV8Internal::activityLoggedAttrGetter2AttributeGetterForMainWorld(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void activityLoggedAttrGetter2AttributeSetterForMainWorld(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    ExceptionState exceptionState(ExceptionState::SetterContext, "activityLoggedAttrGetter2", "TestObject", info.Holder(), info.GetIsolate());
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    ExceptionState exceptionState(ExceptionState::SetterContext, "activityLoggedAttrGetter2", "TestObject", holder, info.GetIsolate());
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_EXCEPTION_VOID(int, cppValue, toInt32(jsValue, exceptionState), exceptionState);
     impl->setActivityLoggedAttrGetter2(cppValue);
 }
 
 static void activityLoggedAttrGetter2AttributeSetterCallbackForMainWorld(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::activityLoggedAttrGetter2AttributeSetterForMainWorld(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void activityLoggedInIsolatedWorldsAttrGetterAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueInt(info, impl->activityLoggedInIsolatedWorldsAttrGetter());
 }
 
 static void activityLoggedInIsolatedWorldsAttrGetterAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     V8PerContextData* contextData = V8PerContextData::from(info.GetIsolate()->GetCurrentContext());
     if (contextData && contextData->activityLogger())
         contextData->activityLogger()->log("TestObject.activityLoggedInIsolatedWorldsAttrGetter", 0, 0, "Getter");
     TestObjectV8Internal::activityLoggedInIsolatedWorldsAttrGetterAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void activityLoggedInIsolatedWorldsAttrGetterAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    ExceptionState exceptionState(ExceptionState::SetterContext, "activityLoggedInIsolatedWorldsAttrGetter", "TestObject", info.Holder(), info.GetIsolate());
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    ExceptionState exceptionState(ExceptionState::SetterContext, "activityLoggedInIsolatedWorldsAttrGetter", "TestObject", holder, info.GetIsolate());
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_EXCEPTION_VOID(int, cppValue, toInt32(jsValue, exceptionState), exceptionState);
     impl->setActivityLoggedInIsolatedWorldsAttrGetter(cppValue);
 }
 
 static void activityLoggedInIsolatedWorldsAttrGetterAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::activityLoggedInIsolatedWorldsAttrGetterAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void activityLoggedInIsolatedWorldsAttrGetterAttributeGetterForMainWorld(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueInt(info, impl->activityLoggedInIsolatedWorldsAttrGetter());
 }
 
 static void activityLoggedInIsolatedWorldsAttrGetterAttributeGetterCallbackForMainWorld(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::activityLoggedInIsolatedWorldsAttrGetterAttributeGetterForMainWorld(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void activityLoggedInIsolatedWorldsAttrGetterAttributeSetterForMainWorld(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    ExceptionState exceptionState(ExceptionState::SetterContext, "activityLoggedInIsolatedWorldsAttrGetter", "TestObject", info.Holder(), info.GetIsolate());
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    ExceptionState exceptionState(ExceptionState::SetterContext, "activityLoggedInIsolatedWorldsAttrGetter", "TestObject", holder, info.GetIsolate());
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_EXCEPTION_VOID(int, cppValue, toInt32(jsValue, exceptionState), exceptionState);
     impl->setActivityLoggedInIsolatedWorldsAttrGetter(cppValue);
 }
 
 static void activityLoggedInIsolatedWorldsAttrGetterAttributeSetterCallbackForMainWorld(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::activityLoggedInIsolatedWorldsAttrGetterAttributeSetterForMainWorld(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
@@ skipping 19 matching lines @@
 static void deprecatedStaticAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     UseCounter::countDeprecation(callingExecutionContext(info.GetIsolate()), UseCounter::StaticAttribute);
     TestObjectV8Internal::deprecatedStaticAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void deprecatedStaticAttrAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    ExceptionState exceptionState(ExceptionState::SetterContext, "deprecatedStaticAttr", "TestObject", info.Holder(), info.GetIsolate());
+    ExceptionState exceptionState(ExceptionState::SetterContext, "deprecatedStaticAttr", "TestObject", holder, info.GetIsolate());
     V8TRYCATCH_EXCEPTION_VOID(int, cppValue, toInt32(jsValue, exceptionState), exceptionState);
     TestObject::setDeprecatedStaticAttr(cppValue);
 }
 
 static void deprecatedStaticAttrAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     UseCounter::countDeprecation(callingExecutionContext(info.GetIsolate()), UseCounter::StaticAttribute);
     TestObjectV8Internal::deprecatedStaticAttrAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void deprecatedReadonlyAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueInt(info, impl->deprecatedReadonlyAttr());
 }
 
 static void deprecatedReadonlyAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     UseCounter::countDeprecation(callingExecutionContext(info.GetIsolate()), UseCounter::ReadonlyAttribute);
     TestObjectV8Internal::deprecatedReadonlyAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void deprecatedAttrAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueInt(info, impl->deprecatedAttr());
 }
 
 static void deprecatedAttrAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     UseCounter::countDeprecation(callingExecutionContext(info.GetIsolate()), UseCounter::Attribute);
     TestObjectV8Internal::deprecatedAttrAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void deprecatedAttrAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    ExceptionState exceptionState(ExceptionState::SetterContext, "deprecatedAttr", "TestObject", info.Holder(), info.GetIsolate());
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    ExceptionState exceptionState(ExceptionState::SetterContext, "deprecatedAttr", "TestObject", holder, info.GetIsolate());
+    TestObject* impl = V8TestObject::toNative(holder);
     V8TRYCATCH_EXCEPTION_VOID(int, cppValue, toInt32(jsValue, exceptionState), exceptionState);
     impl->setDeprecatedAttr(cppValue);
 }
 
 static void deprecatedAttrAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     UseCounter::countDeprecation(callingExecutionContext(info.GetIsolate()), UseCounter::Attribute);
     TestObjectV8Internal::deprecatedAttrAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void locationAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueFast(info, WTF::getPtr(impl->location()), impl);
 }
 
 static void locationAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::locationAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void locationAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    TestObject* proxyImpl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* proxyImpl = V8TestObject::toNative(holder);
     RefPtr<TestNode> impl = WTF::getPtr(proxyImpl->location());
     if (!impl)
         return;
     V8TRYCATCH_FOR_V8STRINGRESOURCE_VOID(V8StringResource<>, cppValue, jsValue);
     impl->setHref(cppValue);
 }
 
 static void locationAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     TestObjectV8Internal::locationAttributeSetter(jsValue, info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void locationWithExceptionAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
     v8SetReturnValueFast(info, WTF::getPtr(impl->locationWithException()), impl);
 }
 
 static void locationWithExceptionAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestObjectV8Internal::locationWithExceptionAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void locationWithExceptionAttributeSetter(v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
-    TestObject* proxyImpl = V8TestObject::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* proxyImpl = V8TestObject::toNative(holder);
     RefPtr<TestNode> impl = WTF::getPtr(proxyImpl->locationWithException());
     if (!impl)
         return;
     V8TRYCATCH_FOR_V8STRINGRESOURCE_VOID(V8StringResource<>, cppValue, jsValue);
     impl->setHrefThrows(cppValue);
 }
 
 static void locationWithExceptionAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
@@ skipping 2409 matching lines @@
     fromInternalPointer(object)->deref();
 }
 
 template<>
 v8::Handle<v8::Value> toV8NoInline(TestObject* impl, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
 {
     return toV8(impl, creationContext, isolate);
 }
 
 } // namespace WebCore