Clean up virtual methods in MarkupAccumulator and subclasses

Source/core/page/PageSerializer.cpp

 /*
  * Copyright (C) 2011 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 81 matching lines @@
 {
     return element->hasTagName(HTMLNames::scriptTag) || element->hasTagName(HTMLNames::noscriptTag) || isCharsetSpecifyingNode(element);
 }
 
 static const QualifiedName& frameOwnerURLAttributeName(const HTMLFrameOwnerElement& frameOwner)
 {
     // FIXME: We should support all frame owners including applets.
     return frameOwner.hasTagName(HTMLNames::objectTag) ? HTMLNames::dataAttr : HTMLNames::srcAttr;
 }
 
-class SerializerMarkupAccumulator : public WebCore::MarkupAccumulator {
+class SerializerMarkupAccumulator FINAL : public MarkupAccumulator {
 public:
     SerializerMarkupAccumulator(PageSerializer*, Document*, Vector<Node*>*);
     virtual ~SerializerMarkupAccumulator();
 
 protected:
-    virtual void appendText(StringBuilder& out, Text*);
-    virtual void appendElement(StringBuilder& out, Element*, Namespaces*);
-    virtual void appendCustomAttributes(StringBuilder& out, Element*, Namespaces*);
-    virtual void appendEndTag(Node*);
+    virtual void appendText(StringBuilder& out, Text*) OVERRIDE;
+    virtual void appendElement(StringBuilder& out, Element*, Namespaces*) OVERRIDE;
+    virtual void appendCustomAttributes(StringBuilder& out, Element*, Namespaces*) OVERRIDE;
+    virtual void appendEndTag(Node*) OVERRIDE;
 
 private:
     PageSerializer* m_serializer;
     Document* m_document;
 };
 
 SerializerMarkupAccumulator::SerializerMarkupAccumulator(PageSerializer* serializer, Document* document, Vector<Node*>* nodes)
     : MarkupAccumulator(nodes, ResolveAllURLs)
     , m_serializer(serializer)
     , m_document(document)
@@ skipping 254 matching lines @@
     if (iter != m_blankFrameURLs.end())
         return iter->value;
     String url = "wyciwyg://frame/" + String::number(m_blankFrameCounter++);
     KURL fakeURL(ParsedURLString, url);
     m_blankFrameURLs.add(frame, fakeURL);
 
     return fakeURL;
 }
 
 }