Revert of Revert of stop calling SkScalarDiv

src/gpu/GrAAConvexPathRenderer.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 "GrAAConvexPathRenderer.h"
 
@@ skipping 86 matching lines @@
         for (int i = 0; i < count; ++i) {
             const SkPoint& pt = segments[i].endPt();
             avg.fX += pt.fX;
             avg.fY += pt.fY;
         }
         SkScalar denom = SK_Scalar1 / count;
         avg.scale(denom);
         *c = avg;
     } else {
         area *= 3;
-        area = SkScalarDiv(SK_Scalar1, area);
+        area = SkScalarInvert(area);
         center.fX = SkScalarMul(center.fX, area);
         center.fY = SkScalarMul(center.fY, area);
         // undo the translate of p0 to the origin.
         *c = center + p0;
     }
     SkASSERT(!SkScalarIsNaN(c->fX) && !SkScalarIsNaN(c->fY));
 }
 
 static void compute_vectors(SegmentArray* segments,
                             SkPoint* fanPt,
@@ skipping 911 matching lines @@
     geometry.fColor = color;
     geometry.fViewMatrix = vm;
     geometry.fPath = path;
 
     SkAutoTUnref<GrBatch> batch(AAConvexPathBatch::Create(geometry));
     target->drawBatch(pipelineBuilder, batch);
 
     return true;
 
 }