Remove include of stdlib.h from SkTypes.h.

src/pathops/SkOpSpan.cpp

 /*
  * Copyright 2014 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 351 matching lines @@
     fChased = fDone = false;
     segment->bumpCount();
 }
 
 void SkOpSpan::setOppSum(int oppSum) {
     SkASSERT(!final());
     if (fOppSum != SK_MinS32 && fOppSum != oppSum) {
         this->globalState()->setWindingFailed();
         return;
     }
-    SkASSERT(!DEBUG_LIMIT_WIND_SUM || abs(oppSum) <= DEBUG_LIMIT_WIND_SUM);
+    SkASSERT(!DEBUG_LIMIT_WIND_SUM || SkTAbs(oppSum) <= DEBUG_LIMIT_WIND_SUM);
     fOppSum = oppSum;
 }
 
 void SkOpSpan::setWindSum(int windSum) {
     SkASSERT(!final());
     if (fWindSum != SK_MinS32 && fWindSum != windSum) {
         this->globalState()->setWindingFailed();
         return;
     }
-    SkASSERT(!DEBUG_LIMIT_WIND_SUM || abs(windSum) <= DEBUG_LIMIT_WIND_SUM);
+    SkASSERT(!DEBUG_LIMIT_WIND_SUM || SkTAbs(windSum) <= DEBUG_LIMIT_WIND_SUM);
     fWindSum = windSum;
 }