Update DOM classes to use OVERRIDE / FINAL when needed

Source/core/dom/NamedFlow.h

 /*
  * Copyright (C) 2011 Adobe Systems Incorporated. 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 27 matching lines @@
 
 namespace WebCore {
 
 class Document;
 class NamedFlowCollection;
 class Node;
 class NodeList;
 class RenderNamedFlowThread;
 class ExecutionContext;
 
-class NamedFlow : public RefCounted<NamedFlow>, public ScriptWrappable, public EventTargetWithInlineData {
+class NamedFlow FINAL : public RefCounted<NamedFlow>, public ScriptWrappable, public EventTargetWithInlineData {
     REFCOUNTED_EVENT_TARGET(NamedFlow);
 public:
     static PassRefPtr<NamedFlow> create(PassRefPtr<NamedFlowCollection> manager, const AtomicString& flowThreadName);
 
-    ~NamedFlow();
+    virtual ~NamedFlow();
 
     const AtomicString& name() const;
     bool overset() const;
     int firstEmptyRegionIndex() const;
     PassRefPtr<NodeList> getRegionsByContent(Node*);
     PassRefPtr<NodeList> getRegions();
     PassRefPtr<NodeList> getContent();
 
     virtual const AtomicString& interfaceName() const OVERRIDE;
     virtual ExecutionContext* executionContext() const OVERRIDE;
@@ skipping 20 matching lines @@
     // The name of the flow thread as specified in CSS.
     AtomicString m_flowThreadName;
 
     RefPtr<NamedFlowCollection> m_flowManager;
     RenderNamedFlowThread* m_parentFlowThread;
 };
 
 }
 
 #endif