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

Source/core/animation/AngleSVGInterpolation.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef AngleSVGInterpolation_h
 #define AngleSVGInterpolation_h
 
 #include "core/animation/SVGInterpolation.h"
 #include "core/svg/SVGAngle.h"
 
 namespace blink {
 
 class SVGInteger;
 
 class AngleSVGInterpolation : public SVGInterpolation {
 public:
     static PassRefPtrWillBeRawPtr<AngleSVGInterpolation> create(SVGPropertyBase* start, SVGPropertyBase* end, PassRefPtrWillBeRawPtr<SVGAnimatedPropertyBase> attribute)
     {
         return adoptRefWillBeNoop(new AngleSVGInterpolation(toInterpolableValue(start), toInterpolableValue(end), attribute));
     }
 
     static bool canCreateFrom(SVGPropertyBase* value)
     {
         return toSVGAngle(value)->orientType()->enumValue() == SVGMarkerOrientAngle;
     }
 
-    virtual PassRefPtrWillBeRawPtr<SVGPropertyBase> interpolatedValue(SVGElement&) const override final
+    PassRefPtrWillBeRawPtr<SVGPropertyBase> interpolatedValue(SVGElement&) const final
     {
         return fromInterpolableValue(m_cachedValue.get());
     }
 
     DEFINE_INLINE_VIRTUAL_TRACE()
     {
         SVGInterpolation::trace(visitor);
     }
 
 private:
@@ skipping 12 matching lines @@
         double doubleValue = toInterpolableNumber(value)->value();
         RefPtrWillBeRawPtr<SVGAngle> result = SVGAngle::create();
         result->newValueSpecifiedUnits(SVGAngle::SVG_ANGLETYPE_DEG, doubleValue);
         return result.release();
     }
 };
 
 }
 
 #endif // AngleSVGInterpolation_h