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

Source/core/svg/SVGImageElement.h

Index: Source/core/svg/SVGImageElement.h
diff --git a/Source/core/svg/SVGImageElement.h b/Source/core/svg/SVGImageElement.h
index 6b5421f24d1bb669166ee56f0b155b345321be5e..8373158ac7548968950b9bc3ae058cfc094fb9a4 100644
--- a/Source/core/svg/SVGImageElement.h
+++ b/Source/core/svg/SVGImageElement.h
@@ -54,25 +54,25 @@ public:
 private:
     explicit SVGImageElement(Document&);
 
-    virtual bool isStructurallyExternal() const override { return !hrefString().isNull(); }
+    bool isStructurallyExternal() const override { return !hrefString().isNull(); }
 
-    virtual bool isPresentationAttribute(const QualifiedName&) const override;
-    virtual bool isPresentationAttributeWithSVGDOM(const QualifiedName&) const override;
-    virtual void collectStyleForPresentationAttribute(const QualifiedName&, const AtomicString&, MutableStylePropertySet*) override;
+    bool isPresentationAttribute(const QualifiedName&) const override;
+    bool isPresentationAttributeWithSVGDOM(const QualifiedName&) const override;
+    void collectStyleForPresentationAttribute(const QualifiedName&, const AtomicString&, MutableStylePropertySet*) override;
 
-    virtual void svgAttributeChanged(const QualifiedName&) override;
+    void svgAttributeChanged(const QualifiedName&) override;
 
-    virtual void attach(const AttachContext& = AttachContext()) override;
-    virtual InsertionNotificationRequest insertedInto(ContainerNode*) override;
+    void attach(const AttachContext& = AttachContext()) override;
+    InsertionNotificationRequest insertedInto(ContainerNode*) override;
 
-    virtual LayoutObject* createLayoutObject(const ComputedStyle&) override;
+    LayoutObject* createLayoutObject(const ComputedStyle&) override;
 
-    virtual const AtomicString imageSourceURL() const override;
+    const AtomicString imageSourceURL() const override;
 
-    virtual bool haveLoadedRequiredResources() override;
+    bool haveLoadedRequiredResources() override;
 
-    virtual bool selfHasRelativeLengths() const override;
-    virtual void didMoveToNewDocument(Document& oldDocument) override;
+    bool selfHasRelativeLengths() const override;
+    void didMoveToNewDocument(Document& oldDocument) override;
     SVGImageLoader& imageLoader() const { return *m_imageLoader; }
 
     RefPtrWillBeMember<SVGAnimatedLength> m_x;