Update SVG classes to use OVERRIDE / FINAL when needed

Source/core/svg/SVGMaskElement.h

Index: Source/core/svg/SVGMaskElement.h
diff --git a/Source/core/svg/SVGMaskElement.h b/Source/core/svg/SVGMaskElement.h
index 8c0814de508ee0712532b198eef93bc5d0c9e1bf..67db78f3979889eed9b2b9ee37f6fb9fa1472dbf 100644
--- a/Source/core/svg/SVGMaskElement.h
+++ b/Source/core/svg/SVGMaskElement.h
@@ -43,17 +43,17 @@ public:
 private:
     explicit SVGMaskElement(Document&);
 
-    virtual bool isValid() const { return SVGTests::isValid(); }
-    virtual bool needsPendingResourceHandling() const { return false; }
+    virtual bool isValid() const OVERRIDE { return SVGTests::isValid(); }
+    virtual bool needsPendingResourceHandling() const OVERRIDE { return false; }
 
     bool isSupportedAttribute(const QualifiedName&);
     virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
-    virtual void svgAttributeChanged(const QualifiedName&);
-    virtual void childrenChanged(bool changedByParser = false, Node* beforeChange = 0, Node* afterChange = 0, int childCountDelta = 0);
+    virtual void svgAttributeChanged(const QualifiedName&) OVERRIDE;
+    virtual void childrenChanged(bool changedByParser = false, Node* beforeChange = 0, Node* afterChange = 0, int childCountDelta = 0) OVERRIDE;
 
-    virtual RenderObject* createRenderer(RenderStyle*);
+    virtual RenderObject* createRenderer(RenderStyle*) OVERRIDE;
 
-    virtual bool selfHasRelativeLengths() const;
+    virtual bool selfHasRelativeLengths() const OVERRIDE;
 
     RefPtr<SVGAnimatedLength> m_x;
     RefPtr<SVGAnimatedLength> m_y;
@@ -65,9 +65,9 @@ private:
     END_DECLARE_ANIMATED_PROPERTIES
 
     // SVGTests
-    virtual void synchronizeRequiredFeatures() { SVGTests::synchronizeRequiredFeatures(this); }
-    virtual void synchronizeRequiredExtensions() { SVGTests::synchronizeRequiredExtensions(this); }
-    virtual void synchronizeSystemLanguage() { SVGTests::synchronizeSystemLanguage(this); }
+    virtual void synchronizeRequiredFeatures() OVERRIDE { SVGTests::synchronizeRequiredFeatures(this); }
+    virtual void synchronizeRequiredExtensions() OVERRIDE { SVGTests::synchronizeRequiredExtensions(this); }
+    virtual void synchronizeSystemLanguage() OVERRIDE { SVGTests::synchronizeSystemLanguage(this); }
 };
 
 DEFINE_NODE_TYPE_CASTS(SVGMaskElement, hasTagName(SVGNames::maskTag));