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

Source/core/page/DOMSelection.h

 /*
  * Copyright (C) 2007 Apple Inc.  All rights reserved.
  * Copyright (C) 2012 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 29 matching lines @@
 namespace WebCore {
 
 class ExceptionState;
 class Frame;
 class Node;
 class Position;
 class Range;
 class TreeScope;
 class VisibleSelection;
 
-class DOMSelection : public RefCounted<DOMSelection>, public ScriptWrappable, public DOMWindowProperty {
+class DOMSelection FINAL : public RefCounted<DOMSelection>, public ScriptWrappable, public DOMWindowProperty {
 public:
     static PassRefPtr<DOMSelection> create(const TreeScope* treeScope) { return adoptRef(new DOMSelection(treeScope)); }
 
     void clearTreeScope();
 
     // Safari Selection Object API
     // These methods return the valid equivalents of internal editing positions.
     Node* baseNode() const;
     Node* extentNode() const;
     int baseOffset() const;
@@ skipping 40 matching lines @@
 
     Node* shadowAdjustedNode(const Position&) const;
     int shadowAdjustedOffset(const Position&) const;
 
     bool isValidForPosition(Node*) const;
 };
 
 } // namespace WebCore
 
 #endif // DOMSelection_h