Revert of Revert of stop calling SkScalarDiv

samplecode/SampleApp.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SampleApp.h"
 
 #include "OverView.h"
@@ skipping 1302 matching lines @@
         canvas->rotate(gAnimTimer.scaled(10));
         canvas->translate(-cx, -cy);
     }
 
     if (fPerspAnim) {
         SkScalar secs = gAnimTimer.scaled(1);
 
         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);
     }
 
     this->installDrawFilter(canvas);
 
     if (fMeasureFPS) {
         if (SampleView::SetRepeatDraw(child, FPS_REPEAT_COUNT)) {
             fMeasureFPS_StartTime = SkTime::GetMSecs();
@@ skipping 954 matching lines @@
     setenv("ANDROID_ROOT", "/android/device/data", 0);
 #endif
     SkGraphics::Init();
     SkEvent::Init();
 }
 
 void application_term() {
     SkEvent::Term();
     SkGraphics::Term();
 }