Revert of stop calling SkScalarDiv

src/core/SkGeometry.cpp

 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkGeometry.h"
 #include "SkMatrix.h"
 #include "SkNx.h"
@@ skipping 44 matching lines @@
 
     if (numer < 0) {
         numer = -numer;
         denom = -denom;
     }
 
     if (denom == 0 || numer == 0 || numer >= denom) {
         return 0;
     }
 
-    SkScalar r = numer / denom;
+    SkScalar r = SkScalarDiv(numer, denom);
     if (SkScalarIsNaN(r)) {
         return 0;
     }
     SkASSERTF(r >= 0 && r < SK_Scalar1, "numer %f, denom %f, r %f", numer, denom, r);
     if (r == 0) { // catch underflow if numer <<<< denom
         return 0;
     }
     *ratio = r;
     return 1;
 }
@@ skipping 1066 matching lines @@
     SkScalar    C = src[0];
     SkScalar    A = src[4] - 2 * src2w + C;
     SkScalar    B = 2 * (src2w - C);
     SkScalar numer = SkScalarMulAdd(SkScalarMulAdd(A, t, B), t, C);
 
     B = 2 * (w - SK_Scalar1);
     C = SK_Scalar1;
     A = -B;
     SkScalar denom = SkScalarMulAdd(SkScalarMulAdd(A, t, B), t, C);
 
-    return numer / denom;
+    return SkScalarDiv(numer, denom);
 }
 
 // F' = 2 (C t (1 + t (-1 + w)) - A (-1 + t) (t (-1 + w) - w) + B (1 - 2 t) w)
 //
 //  t^2 : (2 P0 - 2 P2 - 2 P0 w + 2 P2 w)
 //  t^1 : (-2 P0 + 2 P2 + 4 P0 w - 4 P1 w)
 //  t^0 : -2 P0 w + 2 P1 w
 //
 //  We disregard magnitude, so we can freely ignore the denominator of F', and
 //  divide the numerator by 2
@@ skipping 414 matching lines @@
         matrix.preScale(SK_Scalar1, -SK_Scalar1);
     }
     if (userMatrix) {
         matrix.postConcat(*userMatrix);
     }
     for (int i = 0; i < conicCount; ++i) {
         matrix.mapPoints(dst[i].fPts, 3);
     }
     return conicCount;
 }