Add composition support for SVG Web Animation of x, y, dx, dy attributes

third_party/WebKit/Source/core/animation/LengthSVGInterpolation.h

-// Copyright 2015 The Chromium Authors. All rights reserved.

[suzyh_UTC10 (ex-contributor), 2016/01/13 23:34:00]

You can also delete the LengthSVGInterpolation.cpp file.

[alancutter (OOO until 2018), 2016/01/14 00:44:01]

Done.

-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef LengthSVGInterpolation_h
-#define LengthSVGInterpolation_h
-
-#include "core/animation/SVGInterpolation.h"
-#include "core/svg/SVGLength.h"
-#include "core/svg/SVGLengthList.h"
-
-namespace blink {
-
-class LengthSVGInterpolation : public SVGInterpolation {
-public:
-    typedef SVGLengthList ListType;
-    struct NonInterpolableType {
-        DISALLOW_NEW();
-        SVGLengthMode unitMode;
-    };
-
-    static bool canCreateFrom(SVGLength*, SVGLength*)
-    {
-        return true;
-    }
-
-    static PassRefPtrWillBeRawPtr<SVGLengthList> createList(const SVGAnimatedPropertyBase&);
-
-    static PassRefPtr<LengthSVGInterpolation> create(SVGPropertyBase* start, SVGPropertyBase* end, PassRefPtrWillBeRawPtr<SVGAnimatedPropertyBase> attribute);
-
-    static PassOwnPtr<InterpolableValue> toInterpolableValue(SVGLength*, const SVGAnimatedPropertyBase*, NonInterpolableType*);
-
-    static PassRefPtrWillBeRawPtr<SVGLength> fromInterpolableValue(const InterpolableValue&, const NonInterpolableType&, const SVGElement*, const QualifiedName&);
-
-    PassRefPtrWillBeRawPtr<SVGPropertyBase> interpolatedValue(SVGElement&) const final;
-
-private:
-    LengthSVGInterpolation(PassOwnPtr<InterpolableValue> start, PassOwnPtr<InterpolableValue> end, PassRefPtrWillBeRawPtr<SVGAnimatedPropertyBase> attribute, const NonInterpolableType& modeData)
-        : SVGInterpolation(start, end, attribute)
-        , m_modeData(modeData)
-    {
-    }
-
-    const NonInterpolableType m_modeData;
-};
-
-}
-
-#endif // LengthSVGInterpolation_h