path ops work in progress

src/pathops/SkPathOpsLine.h

Index: src/pathops/SkPathOpsLine.h
diff --git a/src/pathops/SkPathOpsLine.h b/src/pathops/SkPathOpsLine.h
index 75f3bd10588cff3a2e18df452074c8bf6f9c683f..a3cfcf26efc58d0dab528c71fb884dee0bed3218 100644
--- a/src/pathops/SkPathOpsLine.h
+++ b/src/pathops/SkPathOpsLine.h
@@ -31,10 +31,16 @@ struct SkDLine {
     static double ExactPointV(const SkDPoint& xy, double top, double bottom, double x);
     double isLeft(const SkDPoint& pt) const;
     double nearPoint(const SkDPoint& xy) const;
+    bool nearRay(const SkDPoint& xy) const;
     static double NearPointH(const SkDPoint& xy, double left, double right, double y);
     static double NearPointV(const SkDPoint& xy, double top, double bottom, double x);
+    static bool NearRay(double dx1, double dy1, double dx2, double dy2);
     SkDPoint ptAtT(double t) const;
     SkDLine subDivide(double t1, double t2) const;
+
+#ifdef SK_DEBUG
+    void dump();
+#endif
 private:
     SkDVector tangent() const { return fPts[0] - fPts[1]; }
 };