path ops -- rewrite angle sort

src/pathops/SkPathOpsCubic.h

Index: src/pathops/SkPathOpsCubic.h
===================================================================
--- src/pathops/SkPathOpsCubic.h	(revision 9425)
+++ src/pathops/SkPathOpsCubic.h	(working copy)
@@ -8,6 +8,7 @@
 #ifndef SkPathOpsCubic_DEFINED
 #define SkPathOpsCubic_DEFINED
 
+#include "SkPath.h"
 #include "SkPathOpsPoint.h"
 #include "SkTDArray.h"
 
@@ -32,6 +33,7 @@
     const SkDPoint& operator[](int n) const { SkASSERT(n >= 0 && n < 4); return fPts[n]; }
     SkDPoint& operator[](int n) { SkASSERT(n >= 0 && n < 4); return fPts[n]; }
 
+    void align(int endIndex, int ctrlIndex, SkDPoint* dstPt) const; 
     double calcPrecision() const;
     SkDCubicPair chopAt(double t) const;
     bool clockwise() const;