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

Source/bindings/tests/results/V8TestException.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 "V8TestException.h"
 
 #include "RuntimeEnabledFeatures.h"
@@ skipping 26 matching lines @@
 
 namespace WebCore {
 const WrapperTypeInfo V8TestException::wrapperTypeInfo = { gin::kEmbedderBlink, V8TestException::domTemplate, V8TestException::derefObject, 0, 0, 0, V8TestException::installPerContextEnabledMethods, 0, WrapperTypeExceptionPrototype, false };
 
 namespace TestExceptionV8Internal {
 
 template <typename T> void V8_USE(T) { }
 
 static void readonlyUnsignedShortAttributeAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestException* impl = V8TestException::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestException* impl = V8TestException::toNative(holder);
     v8SetReturnValueUnsigned(info, impl->readonlyUnsignedShortAttribute());
 }
 
 static void readonlyUnsignedShortAttributeAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestExceptionV8Internal::readonlyUnsignedShortAttributeAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void readonlyStringAttributeAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestException* impl = V8TestException::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestException* impl = V8TestException::toNative(holder);
     v8SetReturnValueString(info, impl->readonlyStringAttribute(), info.GetIsolate());
 }
 
 static void readonlyStringAttributeAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
     TestExceptionV8Internal::readonlyStringAttributeAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
@@ skipping 93 matching lines @@
     fromInternalPointer(object)->deref();
 }
 
 template<>
 v8::Handle<v8::Value> toV8NoInline(TestException* impl, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
 {
     return toV8(impl, creationContext, isolate);
 }
 
 } // namespace WebCore