Revert of Revert of stop calling SkScalarDiv

samplecode/SampleApp.cpp

Index: samplecode/SampleApp.cpp
diff --git a/samplecode/SampleApp.cpp b/samplecode/SampleApp.cpp
index 82d42fdfc45d94ed7d80ec52729ef578f41ad98a..04b1cb02589ceca9c802f20021707ceb731e06cc 100644
--- a/samplecode/SampleApp.cpp
+++ b/samplecode/SampleApp.cpp
@@ -1320,18 +1320,18 @@
         static const SkScalar gAnimPeriod = 10 * SK_Scalar1;
         static const SkScalar gAnimMag = SK_Scalar1 / 1000;
         SkScalar t = SkScalarMod(secs, gAnimPeriod);
-        if (SkScalarFloorToInt(SkScalarDiv(secs, gAnimPeriod)) & 0x1) {
+        if (SkScalarFloorToInt(secs / gAnimPeriod) & 0x1) {
             t = gAnimPeriod - t;
         }
         t = 2 * t - gAnimPeriod;
-        t = SkScalarMul(SkScalarDiv(t, gAnimPeriod), gAnimMag);
+        t *= gAnimMag / gAnimPeriod;
         SkMatrix m;
         m.reset();
 #if 1
         m.setPerspY(t);
 #else
         m.setPerspY(SK_Scalar1 / 1000);
-        m.setSkewX(SkScalarDiv(8, 25));
+        m.setSkewX(8.0f / 25);
         m.dump();
 #endif
         canvas->concat(m);