working on initial winding for cubics

src/pathops/SkPathOpsConic.h

Index: src/pathops/SkPathOpsConic.h
diff --git a/src/pathops/SkPathOpsConic.h b/src/pathops/SkPathOpsConic.h
index dce7032ddcd1d5f946c3cc0e9c736b049b41497e..82519015541c6dd156f31ed8221902b47db8224a 100644
--- a/src/pathops/SkPathOpsConic.h
+++ b/src/pathops/SkPathOpsConic.h
@@ -109,7 +109,7 @@ struct SkDConic {
         return conic.subDivide(a, c, t1, t2, newWeight);
     }
 
-    SkDPoint top(double startT, double endT) const;
+    SkDPoint top(double startT, double endT, double* topT) const;
 
     // utilities callable by the user from the debugger when the implementation code is linked in
     void dump() const;