fix path op conic bugs

src/pathops/SkOpSegment.h

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #ifndef SkOpSegment_DEFINE
 #define SkOpSegment_DEFINE
 
 #include "SkOpAngle.h"
@@ skipping 51 matching lines @@
     }
 
     SkOpSegment* addCubic(SkPoint pts[4], SkOpContour* parent) {
         init(pts, 1, parent, SkPath::kCubic_Verb);
         SkDCurve curve;
         curve.fCubic.set(pts);
         curve.setCubicBounds(pts, 1, 0, 1, &fBounds);
         return this;
     }
 
-    void addCurveTo(const SkOpSpanBase* start, const SkOpSpanBase* end, SkPathWriter* path,
-                    bool active) const;
+    bool addCurveTo(const SkOpSpanBase* start, const SkOpSpanBase* end, SkPathWriter* path) const;
 
     SkOpAngle* addEndSpan(SkChunkAlloc* allocator) {
         SkOpAngle* angle = SkOpTAllocator<SkOpAngle>::Allocate(allocator);
         angle->set(&fTail, fTail.prev());
         fTail.setFromAngle(angle);
         return angle;
     }
 
     SkOpSegment* addLine(SkPoint pts[2], SkOpContour* parent) {
         init(pts, 1, parent, SkPath::kLine_Verb);
@@ skipping 333 matching lines @@
     SkPathOpsBounds fBounds;  // tight bounds
     SkScalar fWeight;
     int fCount;  // number of spans (one for a non-intersecting segment)
     int fDoneCount;  // number of processed spans (zero initially)
     SkPath::Verb fVerb;
     bool fVisited;  // used by missing coincidence check
     SkDEBUGCODE(int fID);
 };
 
 #endif