Web Animations: Add SVGPathInterpolationType

third_party/WebKit/Source/core/animation/SVGPathSegInterpolationFunctions.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 SVGPathSegInterpolationFunctions_h
+#define SVGPathSegInterpolationFunctions_h
+
+#include "core/animation/InterpolableValue.h"
+#include "core/svg/SVGPathData.h"
+
+namespace blink {
+
+struct PathCoordinates {
+    double initialX = 0;
+    double initialY = 0;
+    double currentX = 0;
+    double currentY = 0;
+};
+
+class SVGPathSegInterpolationFunctions {
+    STATIC_ONLY(SVGPathSegInterpolationFunctions);
+public:
+    static PassOwnPtr<InterpolableValue> consumePathSeg(const PathSegmentData&, PathCoordinates& currentCoordinates);
+    static PathSegmentData consumeInterpolablePathSeg(const InterpolableValue&, SVGPathSegType, PathCoordinates& currentCoordinates);
+};
+
+} // namespace blink
+
+#endif // SVGPathSegInterpolationFunctions_h
+