Code cleanup: Remove SVGInterpolation

third_party/WebKit/Source/core/animation/DefaultSVGInterpolation.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 DefaultSVGInterpolation_h
-#define DefaultSVGInterpolation_h
-
-#include "core/animation/SVGInterpolation.h"
-
-namespace blink {
-
-class DefaultSVGInterpolation : public SVGInterpolation {
-public:
-    static PassRefPtr<DefaultSVGInterpolation> create(SVGPropertyBase* start, SVGPropertyBase* end, PassRefPtrWillBeRawPtr<SVGAnimatedPropertyBase> attribute)
-    {
-        return adoptRef(new DefaultSVGInterpolation(start, end, attribute));
-    }
-
-    PassRefPtrWillBeRawPtr<SVGPropertyBase> interpolatedValue(SVGElement&) const final;
-
-private:
-    DefaultSVGInterpolation(SVGPropertyBase* start, SVGPropertyBase* end, PassRefPtrWillBeRawPtr<SVGAnimatedPropertyBase> attribute);
-
-    RefPtrWillBePersistent<SVGPropertyBase> m_start;
-    RefPtrWillBePersistent<SVGPropertyBase> m_end;
-};
-
-}
-
-#endif // DefaultSVGInterpolation_h