fix winding for path ops builder

src/pathops/SkOpSegment.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "SkOpCoincidence.h"
 #include "SkOpContour.h"
 #include "SkOpSegment.h"
 #include "SkPathWriter.h"
@@ skipping 834 matching lines @@
             return true;
         }
     }
     return false;
 }
 
 bool SkOpSegment::isXor() const {
     return fContour->isXor();
 }
 
+void SkOpSegment::markAllDone() {
+    SkOpSpan* span = this->head();
+    do {
+        this->markDone(span);
+    } while ((span = span->next()->upCastable()));
+}
+
 SkOpSpanBase* SkOpSegment::markAndChaseDone(SkOpSpanBase* start, SkOpSpanBase* end) {
     int step = start->step(end);
     SkOpSpan* minSpan = start->starter(end);
     markDone(minSpan);
     SkOpSpanBase* last = NULL;
     SkOpSegment* other = this;
     while ((other = other->nextChase(&start, &step, &minSpan, &last))) {
         if (other->done()) {
             SkASSERT(!last);
             break;
@@ skipping 808 matching lines @@
     int absOut = abs(outerWinding);
     int absIn = abs(innerWinding);
     bool result = absOut == absIn ? outerWinding < 0 : absOut < absIn;
     return result;
 }
 
 int SkOpSegment::windSum(const SkOpAngle* angle) const {
     const SkOpSpan* minSpan = angle->start()->starter(angle->end());
     return minSpan->windSum();
 }