FYI: Compile fixes when always using a local for method return value

Source/bindings/tests/results/V8TestInterface.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"
 #if ENABLE(CONDITION)
 #include "V8TestInterface.h"
 
@@ skipping 1132 matching lines @@
 static void partial2StaticVoidMethodMethodCallback(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMMethod");
     TestInterfaceImplementationV8Internal::partial2StaticVoidMethodMethod(info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
 static void toStringMethod(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     TestInterfaceImplementation* impl = V8TestInterface::toNative(info.Holder());
-    v8SetReturnValueString(info, impl->toString(), info.GetIsolate());
+    String result = impl->toString();
+    v8SetReturnValueString(info, result, info.GetIsolate());
 }
 
 static void toStringMethodCallback(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMMethod");
     TestInterfaceImplementationV8Internal::toStringMethod(info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
 static void indexedPropertyGetter(uint32_t index, const v8::PropertyCallbackInfo<v8::Value>& info)
@@ skipping 384 matching lines @@
 }
 
 template<>
 v8::Handle<v8::Value> toV8NoInline(TestInterfaceImplementation* impl, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
 {
     return toV8(impl, creationContext, isolate);
 }
 
 } // namespace WebCore
 #endif // ENABLE(CONDITION)