Revert of stop calling SkScalarDiv

src/core/SkPictureShader.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkPictureShader.h"
 
 #include "SkBitmap.h"
@@ skipping 150 matching lines @@
         scale.set(SkScalarSqrt(m.getScaleX() * m.getScaleX() + m.getSkewX() * m.getSkewX()),
                   SkScalarSqrt(m.getScaleY() * m.getScaleY() + m.getSkewY() * m.getSkewY()));
     }
     SkSize scaledSize = SkSize::Make(SkScalarAbs(scale.x() * fTile.width()),
                                      SkScalarAbs(scale.y() * fTile.height()));
 
     // Clamp the tile size to about 4M pixels
     static const SkScalar kMaxTileArea = 2048 * 2048;
     SkScalar tileArea = SkScalarMul(scaledSize.width(), scaledSize.height());
     if (tileArea > kMaxTileArea) {
-        SkScalar clampScale = SkScalarSqrt(kMaxTileArea / tileArea);
+        SkScalar clampScale = SkScalarSqrt(SkScalarDiv(kMaxTileArea, tileArea));
         scaledSize.set(SkScalarMul(scaledSize.width(), clampScale),
                        SkScalarMul(scaledSize.height(), clampScale));
     }
 #if SK_SUPPORT_GPU
     // Scale down the tile size if larger than maxTextureSize for GPU Path or it should fail on create texture
     if (maxTextureSize) {
         if (scaledSize.width() > maxTextureSize || scaledSize.height() > maxTextureSize) {
-            SkScalar downScale = maxTextureSize / SkMax32(scaledSize.width(), scaledSize.height());
+            SkScalar downScale = SkScalarDiv(maxTextureSize,
+                                            SkMax32(scaledSize.width(), scaledSize.height()));
             scaledSize.set(SkScalarFloorToScalar(SkScalarMul(scaledSize.width(), downScale)),
                            SkScalarFloorToScalar(SkScalarMul(scaledSize.height(), downScale)));
         }
     }
 #endif
 
     SkISize tileSize = scaledSize.toRound();
     if (tileSize.isEmpty()) {
         return NULL;
     }
@@ skipping 131 matching lines @@
     return bitmapShader->asFragmentProcessor(context, paint, viewM, NULL, paintColor, fp);
 }
 #else
 bool SkPictureShader::asFragmentProcessor(GrContext*, const SkPaint&, const SkMatrix&,
                                           const SkMatrix*, GrColor*,
                                           GrFragmentProcessor**) const {
     SkDEBUGFAIL("Should not call in GPU-less build");
     return false;
 }
 #endif