Clean up forward declarations in Source/core

Source/core/workers/WorkerGlobalScope.h

 /*
  * Copyright (C) 2008, 2009 Apple 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 29 matching lines @@
 #include "wtf/Assertions.h"
 #include "wtf/HashMap.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefCounted.h"
 #include "wtf/RefPtr.h"
 #include "wtf/text/AtomicStringHash.h"
 
 namespace blink {
 
-class Blob;
 class ConsoleMessage;
 class ConsoleMessageStorage;
 class ExceptionState;
-class ScheduledAction;
 class WorkerClients;
 class WorkerConsole;
 class WorkerInspectorController;
 class WorkerLocation;
 class WorkerNavigator;
 class WorkerThread;
 
 class WorkerGlobalScope : public RefCountedWillBeGarbageCollectedFinalized<WorkerGlobalScope>, public SecurityContext, public ExecutionContext, public WillBeHeapSupplementable<WorkerGlobalScope>, public EventTargetWithInlineData, public DOMWindowBase64 {
     DEFINE_WRAPPERTYPEINFO();
     REFCOUNTED_EVENT_TARGET(WorkerGlobalScope);
@@ skipping 107 matching lines @@
     double m_timeOrigin;
 
     OwnPtrWillBeMember<ConsoleMessageStorage> m_messageStorage;
 };
 
 DEFINE_TYPE_CASTS(WorkerGlobalScope, ExecutionContext, context, context->isWorkerGlobalScope(), context.isWorkerGlobalScope());
 
 } // namespace blink
 
 #endif // WorkerGlobalScope_h