Rework the SVGPathSource interface

Source/core/svg/SVGPathSource.h

Index: Source/core/svg/SVGPathSource.h
diff --git a/Source/core/svg/SVGPathSource.h b/Source/core/svg/SVGPathSource.h
index 6c2db3009cd1cbb6e2e8281628da36f1bbde8320..80377e713e447a041b36ed8bf6e688c0d2696da7 100644
--- a/Source/core/svg/SVGPathSource.h
+++ b/Source/core/svg/SVGPathSource.h
@@ -24,8 +24,6 @@
 
 namespace blink {
 
-class FloatPoint;
-
 class SVGPathSource : public NoBaseWillBeGarbageCollectedFinalized<SVGPathSource> {
     WTF_MAKE_NONCOPYABLE(SVGPathSource); WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED;
 public:
@@ -33,19 +31,8 @@ public:
     virtual ~SVGPathSource() { }
 
     virtual bool hasMoreData() const = 0;
-    virtual bool moveToNextToken() = 0;
-    virtual bool parseSVGSegmentType(SVGPathSegType&) = 0;
-    virtual SVGPathSegType nextCommand(SVGPathSegType previousCommand) = 0;
-
-    virtual bool parseMoveToSegment(FloatPoint&) = 0;
-    virtual bool parseLineToSegment(FloatPoint&) = 0;
-    virtual bool parseLineToHorizontalSegment(float&) = 0;
-    virtual bool parseLineToVerticalSegment(float&) = 0;
-    virtual bool parseCurveToCubicSegment(FloatPoint&, FloatPoint&, FloatPoint&) = 0;
-    virtual bool parseCurveToCubicSmoothSegment(FloatPoint&, FloatPoint&) = 0;
-    virtual bool parseCurveToQuadraticSegment(FloatPoint&, FloatPoint&) = 0;
-    virtual bool parseCurveToQuadraticSmoothSegment(FloatPoint&) = 0;
-    virtual bool parseArcToSegment(float&, float&, float&, bool&, bool&, FloatPoint&) = 0;
+    virtual SVGPathSegType peekSegmentType() = 0;
+    virtual PathSegmentData parseSegment() = 0;
 
     DEFINE_INLINE_VIRTUAL_TRACE() { }
 };