Fix virtual/override/final usage in Source/core/xml/.

Source/core/xml/XSLStyleSheet.h

 /*
  * This file is part of the XSL implementation.
  *
  * Copyright (C) 2004, 2006, 2008, 2012 Apple Inc. All rights reserved.
  *
  * 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.
  *
@@ skipping 43 matching lines @@
 
     // Taking an arbitrary node is unsafe, because owner node pointer can become
     // stale. XSLTProcessor ensures that the stylesheet doesn't outlive its
     // parent, in part by not exposing it to JavaScript.
     static PassRefPtrWillBeRawPtr<XSLStyleSheet> createForXSLTProcessor(Document* document, Node* stylesheetRootNode, const String& originalURL, const KURL& finalURL)
     {
         ASSERT(RuntimeEnabledFeatures::xsltEnabled());
         return adoptRefWillBeNoop(new XSLStyleSheet(document, stylesheetRootNode, originalURL, finalURL, false));
     }
 
-    virtual ~XSLStyleSheet();
+    ~XSLStyleSheet() override;
 
     bool parseString(const String&);
 
     void checkLoaded();
 
     const KURL& finalURL() const { return m_finalURL; }
 
     void loadChildSheets();
     void loadChildSheet(const String& href);
 
     Document* ownerDocument();
-    virtual XSLStyleSheet* parentStyleSheet() const override { return m_parentStyleSheet; }
+    XSLStyleSheet* parentStyleSheet() const override { return m_parentStyleSheet; }
     void setParentStyleSheet(XSLStyleSheet*);
 
     xmlDocPtr document();
     xsltStylesheetPtr compileStyleSheet();
     xmlDocPtr locateStylesheetSubResource(xmlDocPtr parentDoc, const xmlChar* uri);
 
     void clearDocuments();
 
     void markAsProcessed();
     bool processed() const { return m_processed; }
 
-    virtual String type() const override { return "text/xml"; }
-    virtual bool disabled() const override { return m_isDisabled; }
-    virtual void setDisabled(bool b) override { m_isDisabled = b; }
-    virtual Node* ownerNode() const override { return m_ownerNode; }
-    virtual String href() const override { return m_originalURL; }
-    virtual String title() const override { return emptyString(); }
+    String type() const override { return "text/xml"; }
+    bool disabled() const override { return m_isDisabled; }
+    void setDisabled(bool b) override { m_isDisabled = b; }
+    Node* ownerNode() const override { return m_ownerNode; }
+    String href() const override { return m_originalURL; }
+    String title() const override { return emptyString(); }
 
-    virtual void clearOwnerNode() override { m_ownerNode = nullptr; }
-    virtual KURL baseURL() const override { return m_finalURL; }
-    virtual bool isLoading() const override;
+    void clearOwnerNode() override { m_ownerNode = nullptr; }
+    KURL baseURL() const override { return m_finalURL; }
+    bool isLoading() const override;
 
     DECLARE_VIRTUAL_TRACE();
 
 private:
     XSLStyleSheet(Node* parentNode, const String& originalURL, const KURL& finalURL, bool embedded);
     XSLStyleSheet(Document* ownerDocument, Node* styleSheetRootNode, const String& originalURL, const KURL& finalURL, bool embedded);
     XSLStyleSheet(XSLImportRule* parentImport, const String& originalURL, const KURL& finalURL);
 
     RawPtrWillBeMember<Node> m_ownerNode;
     String m_originalURL;
@@ skipping 11 matching lines @@
 
     RawPtrWillBeMember<XSLStyleSheet> m_parentStyleSheet;
     RefPtrWillBeMember<Document> m_ownerDocument;
 };
 
 DEFINE_TYPE_CASTS(XSLStyleSheet, StyleSheet, sheet, !sheet->isCSSStyleSheet(), !sheet.isCSSStyleSheet());
 
 } // namespace blink
 
 #endif // XSLStyleSheet_h