Update remaining core classes to use OVERRIDE / FINAL when needed

Source/core/testing/Internals.h

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  * Copyright (C) 2013 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.
@@ skipping 48 matching lines @@
 class MallocStatistics;
 class Node;
 class Page;
 class PagePopupController;
 class Range;
 class ExecutionContext;
 class SerializedScriptValue;
 class ShadowRoot;
 class TypeConversions;
 
-class Internals : public RefCounted<Internals>
+class Internals FINAL : public RefCounted<Internals>
     , public ContextLifecycleObserver {
 public:
     static PassRefPtr<Internals> create(Document*);
     virtual ~Internals();
 
     static void resetToConsistentState(Page*);
 
     String elementRenderTreeAsText(Element*, ExceptionState&);
 
     String address(Node*);
@@ skipping 237 matching lines @@
     RefPtr<DOMWindow> m_frontendWindow;
     OwnPtr<InspectorFrontendChannelDummy> m_frontendChannel;
     RefPtr<InternalRuntimeFlags> m_runtimeFlags;
     RefPtr<ScrollingCoordinator> m_scrollingCoordinator;
     RefPtr<InternalProfilers> m_profilers;
 };
 
 } // namespace WebCore
 
 #endif