Update remaining core classes to use OVERRIDE / FINAL when needed

Source/core/testing/InternalSettings.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 24 matching lines @@
 #include "wtf/text/WTFString.h"
 
 namespace WebCore {
 
 class Document;
 class ExceptionState;
 class Frame;
 class Page;
 class Settings;
 
-class InternalSettings : public InternalSettingsGenerated {
+class InternalSettings FINAL : public InternalSettingsGenerated {
 public:
     class Backup {
     public:
         explicit Backup(Settings*);
         void restoreTo(Settings*);
 
         bool m_originalCSSExclusionsEnabled;
         bool m_originalAuthorShadowDOMForAnyElementEnabled;
         bool m_originalExperimentalWebSocketEnabled;
         bool m_originalStyleScoped;
@@ skipping 70 matching lines @@
     Page* page() const { return m_page; }
     static const char* supplementName();
 
     Page* m_page;
     Backup m_backup;
 };
 
 } // namespace WebCore
 
 #endif