Fix virtual/override/final usage in Source/core/{animation,css,style}/.

Source/core/animation/IntegerOptionalIntegerSVGInterpolation.h

Index: Source/core/animation/IntegerOptionalIntegerSVGInterpolation.h
diff --git a/Source/core/animation/IntegerOptionalIntegerSVGInterpolation.h b/Source/core/animation/IntegerOptionalIntegerSVGInterpolation.h
index de335af14e84d41f74c8d154697ebf95ba099904..d3b5e1f5f7e1d01b57d2243841b2b09478bba86c 100644
--- a/Source/core/animation/IntegerOptionalIntegerSVGInterpolation.h
+++ b/Source/core/animation/IntegerOptionalIntegerSVGInterpolation.h
@@ -20,7 +20,7 @@ public:
         return adoptRefWillBeNoop(new IntegerOptionalIntegerSVGInterpolation(toInterpolableValue(start), toInterpolableValue(end), attribute, min));
     }
 
-    virtual PassRefPtrWillBeRawPtr<SVGPropertyBase> interpolatedValue(SVGElement&) const override final
+    PassRefPtrWillBeRawPtr<SVGPropertyBase> interpolatedValue(SVGElement&) const final
     {
         return fromInterpolableValue(*m_cachedValue, m_min);
     }