Update page & frame classes to use OVERRIDE / FINAL when needed

Source/core/page/Page.h

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 64 matching lines @@
 class Settings;
 class SpellCheckerClient;
 class StorageNamespace;
 class UndoStack;
 class ValidationMessageClient;
 
 typedef uint64_t LinkHash;
 
 float deviceScaleFactor(Frame*);
 
-class Page : public Supplementable<Page>, public LifecycleContext<Page>, public SettingsDelegate {
+class Page FINAL : public Supplementable<Page>, public LifecycleContext<Page>, public SettingsDelegate {
     WTF_MAKE_NONCOPYABLE(Page);
     friend class Settings;
 public:
     static void scheduleForcedStyleRecalcForAllPages();
 
     // It is up to the platform to ensure that non-null clients are provided where required.
     struct PageClients {
         WTF_MAKE_NONCOPYABLE(PageClients); WTF_MAKE_FAST_ALLOCATED;
     public:
         PageClients();
         ~PageClients();
 
         ChromeClient* chromeClient;
         ContextMenuClient* contextMenuClient;
         EditorClient* editorClient;
         DragClient* dragClient;
         InspectorClient* inspectorClient;
         BackForwardClient* backForwardClient;
         SpellCheckerClient* spellCheckerClient;
     };
 
     explicit Page(PageClients&);
-    ~Page();
+    virtual ~Page();
 
     FrameHost& frameHost() { return *m_frameHost; }
 
     void setNeedsRecalcStyleInAllFrames();
 
     ViewportDescription viewportDescription() const;
 
     static void refreshPlugins(bool reload);
     PluginData* pluginData() const;
 
@@ skipping 180 matching lines @@
     HashSet<MultisamplingChangedObserver*> m_multisamplingChangedObservers;
 
     // A pointer to all the interfaces provided to in-process Frames for this Page.
     // FIXME: Most of the members of Page should move onto FrameHost.
     OwnPtr<FrameHost> m_frameHost;
 };
 
 } // namespace WebCore
 
 #endif // Page_h