Refactor away SVGPathSource

third_party/WebKit/Source/core/animation/InterpolatedSVGPathSource.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 InterpolatedSVGPathSource_h
 #define InterpolatedSVGPathSource_h
 
 #include "core/animation/SVGPathSegInterpolationFunctions.h"
-#include "core/svg/SVGPathSource.h"
+#include "core/svg/SVGPathData.h"
 #include "wtf/Vector.h"
 
 namespace blink {
 
-class InterpolatedSVGPathSource : public SVGPathSource {
+class InterpolatedSVGPathSource {
+    WTF_MAKE_NONCOPYABLE(InterpolatedSVGPathSource);
+    STACK_ALLOCATED();
 public:
     InterpolatedSVGPathSource(const InterpolableList& listValue, const Vector<SVGPathSegType>& pathSegTypes)
         : m_currentIndex(0)
         , m_interpolablePathSegs(listValue)
         , m_pathSegTypes(pathSegTypes)
     {
         ASSERT(m_interpolablePathSegs.length() == m_pathSegTypes.size());
     }
 
+    bool hasMoreData() const;
+    PathSegmentData parseSegment();
+
 private:
-    bool hasMoreData() const override;
-    SVGPathSegType peekSegmentType() override;
-    PathSegmentData parseSegment() override;
-
     PathCoordinates m_currentCoordinates;
     size_t m_currentIndex;
     const InterpolableList& m_interpolablePathSegs;
     const Vector<SVGPathSegType>& m_pathSegTypes;
 };
 
 bool InterpolatedSVGPathSource::hasMoreData() const
 {
     return m_currentIndex < m_interpolablePathSegs.length();
 }
 
-SVGPathSegType InterpolatedSVGPathSource::peekSegmentType()
-{
-    ASSERT(hasMoreData());
-    return m_pathSegTypes.at(m_currentIndex);
-}
-
 PathSegmentData InterpolatedSVGPathSource::parseSegment()
 {
     PathSegmentData segment = SVGPathSegInterpolationFunctions::consumeInterpolablePathSeg(*m_interpolablePathSegs.get(m_currentIndex), m_pathSegTypes.at(m_currentIndex), m_currentCoordinates);
     m_currentIndex++;
     return segment;
 }
 
 } // namespace blink
 
 #endif // InterpolatedSVGPathSource_h