Oilpan: Remove raw pointer to InProcessWorkerBase from WorkerMessagingProxy

Source/core/workers/WorkerGlobalScopeProxy.h

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 24 matching lines @@
 #include "core/dom/MessagePort.h"
 #include "core/workers/WorkerThread.h"
 #include "wtf/Forward.h"
 #include "wtf/PassOwnPtr.h"
 
 namespace blink {
 
 class KURL;
 
 // A proxy to talk to the worker global scope.
-class CORE_EXPORT WorkerGlobalScopeProxy {
+class CORE_EXPORT WorkerGlobalScopeProxy : public NoBaseWillBeGarbageCollectedFinalized<WorkerGlobalScopeProxy> {
 public:
     virtual ~WorkerGlobalScopeProxy() { }
+    DEFINE_INLINE_VIRTUAL_TRACE() { }
 
     virtual void startWorkerGlobalScope(const KURL& scriptURL, const String& userAgent, const String& sourceCode, WorkerThreadStartMode) = 0;
 
     virtual void terminateWorkerGlobalScope() = 0;
 
     virtual void postMessageToWorkerGlobalScope(PassRefPtr<SerializedScriptValue>, PassOwnPtr<MessagePortChannelArray>) = 0;
 
     virtual bool hasPendingActivity() const = 0;
 
     virtual void workerObjectDestroyed() = 0;
 };
 
 } // namespace blink
 
 #endif // WorkerGlobalScopeProxy_h