Revert of Revert of stop calling SkScalarDiv

src/gpu/effects/GrDashingEffect.cpp

Index: src/gpu/effects/GrDashingEffect.cpp
diff --git a/src/gpu/effects/GrDashingEffect.cpp b/src/gpu/effects/GrDashingEffect.cpp
index bd2997cdf3707746830a6e8da9789f846829fd0c..1ca56487c2f7eb8e2860e2437f8e966611328eca 100644
--- a/src/gpu/effects/GrDashingEffect.cpp
+++ b/src/gpu/effects/GrDashingEffect.cpp
@@ -135,10 +135,10 @@
     }
     SkScalar srcIntervalLen = intervals[0] + intervals[1];
     SkScalar totalLen = pts[1].fX - pts[0].fX;
-    SkScalar temp = SkScalarDiv(totalLen, srcIntervalLen);
+    SkScalar temp = totalLen / srcIntervalLen;
     SkScalar numFullIntervals = SkScalarFloorToScalar(temp);
     *endingInt = totalLen - numFullIntervals * srcIntervalLen + phase;
-    temp = SkScalarDiv(*endingInt, srcIntervalLen);
+    temp = *endingInt / srcIntervalLen;
     *endingInt = *endingInt - SkScalarFloorToScalar(temp) * srcIntervalLen;
     if (0 == *endingInt) {
         *endingInt = srcIntervalLen;