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

Source/core/svg/SVGFEImageElement.h

 /*
  * Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005 Rob Buis <buis@kde.org>
  *
  * 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 24 matching lines @@
 class SVGFEImageElement final : public SVGFilterPrimitiveStandardAttributes,
                                 public SVGURIReference,
                                 public ImageResourceClient {
     DEFINE_WRAPPERTYPEINFO();
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(SVGFEImageElement);
 public:
     DECLARE_NODE_FACTORY(SVGFEImageElement);
 
     bool currentFrameHasSingleSecurityOrigin() const;
 
-    virtual ~SVGFEImageElement();
+    ~SVGFEImageElement() override;
     SVGAnimatedPreserveAspectRatio* preserveAspectRatio() { return m_preserveAspectRatio.get(); }
 
     // Promptly remove as a ImageResource client.
     EAGERLY_FINALIZE();
     DECLARE_VIRTUAL_TRACE();
 
 private:
     explicit SVGFEImageElement(Document&);
 
-    virtual void svgAttributeChanged(const QualifiedName&) override;
-    virtual void notifyFinished(Resource*) override;
+    void svgAttributeChanged(const QualifiedName&) override;
+    void notifyFinished(Resource*) override;
 
-    virtual PassRefPtrWillBeRawPtr<FilterEffect> build(SVGFilterBuilder*, Filter*) override;
+    PassRefPtrWillBeRawPtr<FilterEffect> build(SVGFilterBuilder*, Filter*) override;
 
     void clearResourceReferences();
     void fetchImageResource();
 
-    virtual void buildPendingResource() override;
-    virtual InsertionNotificationRequest insertedInto(ContainerNode*) override;
-    virtual void removedFrom(ContainerNode*) override;
+    void buildPendingResource() override;
+    InsertionNotificationRequest insertedInto(ContainerNode*) override;
+    void removedFrom(ContainerNode*) override;
 
     RefPtrWillBeMember<SVGAnimatedPreserveAspectRatio> m_preserveAspectRatio;
 
     ResourcePtr<ImageResource> m_cachedImage;
 };
 
 } // namespace blink
 
 #endif // SVGFEImageElement_h