Make a deserializing function

third_party/WebKit/Source/bindings/core/v8/GeneratedCodeHelper.cpp

 // Copyright 2016 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.
 
 #include "bindings/core/v8/GeneratedCodeHelper.h"
 
 #include "bindings/core/v8/V8Binding.h"
 
 namespace blink {
 
 void v8ConstructorAttributeGetter(v8::Local<v8::Name> propertyName, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     v8::Local<v8::Value> data = info.Data();
     DCHECK(data->IsExternal());
     V8PerContextData* perContextData = V8PerContextData::from(info.Holder()->CreationContext());
     if (!perContextData)
         return;
     v8SetReturnValue(info, perContextData->constructorForType(WrapperTypeInfo::unwrap(data)));
 }
 
+v8::Local<v8::Value> v8Deserialize(v8::Isolate* isolate, PassRefPtr<SerializedScriptValue> value)
+{
+    if (value)
+        return value->deserialize();
+    return v8::Null(isolate);
+}
+
 } // namespace blink