Rework the SVGPathSource interface

Source/core/svg/SVGPathSegListSource.h

Index: Source/core/svg/SVGPathSegListSource.h
diff --git a/Source/core/svg/SVGPathSegListSource.h b/Source/core/svg/SVGPathSegListSource.h
index adef56c5a34d746bd50b645ba36f573b469a915f..7bbb41a2f52ea9593bc215561e6457cafab7f1e7 100644
--- a/Source/core/svg/SVGPathSegListSource.h
+++ b/Source/core/svg/SVGPathSegListSource.h
@@ -23,10 +23,6 @@
 #include "core/svg/SVGPathSeg.h"
 #include "core/svg/SVGPathSegList.h"
 #include "core/svg/SVGPathSource.h"
-#include "platform/geometry/FloatPoint.h"
-#include "platform/heap/Handle.h"
-#include "wtf/PassOwnPtr.h"
-#include "wtf/RefPtr.h"
 
 namespace blink {
 
@@ -34,25 +30,11 @@ class SVGPathSegListSource final : public SVGPathSource {
 public:
     SVGPathSegListSource(SVGPathSegList::ConstIterator, SVGPathSegList::ConstIterator);
 
-    DECLARE_VIRTUAL_TRACE();
-
 private:
     virtual bool hasMoreData() const override;
-    virtual bool moveToNextToken() override { return true; }
-    virtual bool parseSVGSegmentType(SVGPathSegType&) override;
-    virtual SVGPathSegType nextCommand(SVGPathSegType) override;
-
-    virtual bool parseMoveToSegment(FloatPoint&) override;
-    virtual bool parseLineToSegment(FloatPoint&) override;
-    virtual bool parseLineToHorizontalSegment(float&) override;
-    virtual bool parseLineToVerticalSegment(float&) override;
-    virtual bool parseCurveToCubicSegment(FloatPoint&, FloatPoint&, FloatPoint&) override;
-    virtual bool parseCurveToCubicSmoothSegment(FloatPoint&, FloatPoint&) override;
-    virtual bool parseCurveToQuadraticSegment(FloatPoint&, FloatPoint&) override;
-    virtual bool parseCurveToQuadraticSmoothSegment(FloatPoint&) override;
-    virtual bool parseArcToSegment(float&, float&, float&, bool&, bool&, FloatPoint&) override;
-
-    RefPtrWillBeMember<SVGPathSeg> m_segment;
+    virtual SVGPathSegType peekSegmentType() override;
+    virtual PathSegmentData parseSegment() override;
+
     SVGPathSegList::ConstIterator m_itCurrent;
     SVGPathSegList::ConstIterator m_itEnd;
 };