ServiceWorkerMessageEvent shouldn't hold ScriptValue

third_party/WebKit/Source/modules/serviceworkers/ServiceWorkerMessageEvent.h

 // Copyright 2015 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.
 
 #ifndef ServiceWorkerMessageEvent_h
 #define ServiceWorkerMessageEvent_h
 
 #include "core/dom/DOMArrayBuffer.h"
 #include "core/dom/MessagePort.h"
 #include "modules/EventModules.h"
@@ skipping 15 matching lines @@
         return adoptRefWillBeNoop(new ServiceWorkerMessageEvent(type, initializer));
     }
 
     static PassRefPtrWillBeRawPtr<ServiceWorkerMessageEvent> create(MessagePortArray* ports, PassRefPtr<SerializedScriptValue> data, ServiceWorker* source, const String& origin)
     {
         return adoptRefWillBeNoop(new ServiceWorkerMessageEvent(data, origin, String(), source, ports));
     }
 
     ~ServiceWorkerMessageEvent() override;
 
-    ScriptValue data() const { return m_data; }
     SerializedScriptValue* serializedData() const { return m_serializedData.get(); }
+    void setSerializedData(PassRefPtr<SerializedScriptValue> serializedData) { m_serializedData = serializedData; }
     const String& origin() const { return m_origin; }
     const String& lastEventId() const { return m_lastEventId; }
     MessagePortArray ports(bool& isNull) const;
     MessagePortArray ports() const;
     void source(ServiceWorkerOrMessagePort& result) const;
 
     const AtomicString& interfaceName() const override;
 
     DECLARE_VIRTUAL_TRACE();
 
 private:
     ServiceWorkerMessageEvent();
     ServiceWorkerMessageEvent(const AtomicString& type, const ServiceWorkerMessageEventInit& initializer);
     ServiceWorkerMessageEvent(PassRefPtr<SerializedScriptValue> data, const String& origin, const String& lastEventId, ServiceWorker* source, MessagePortArray* ports);
 
-    ScriptValue m_data;
     RefPtr<SerializedScriptValue> m_serializedData;
     String m_origin;
     String m_lastEventId;
     PersistentWillBeMember<ServiceWorker> m_sourceAsServiceWorker;
     PersistentWillBeMember<MessagePort> m_sourceAsMessagePort;
     PersistentWillBeMember<MessagePortArray> m_ports;
 };
 
 } // namespace blink
 
 #endif // ServiceWorkerMessageEvent_h