Remove float/double conversions from SkMatrix44's map2_pf

src/utils/SkMatrix44.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 "SkMatrix44.h"
 
 static inline bool eq4(const SkMScalar* SK_RESTRICT a,
@@ skipping 816 matching lines @@
         dst4[1] = mat[0][1] * sx + mat[1][1] * sy + mat[3][1];
         dst4[2] = mat[0][2] * sx + mat[1][2] * sy + mat[3][2];
         dst4[3] = 1;
         src2 += 2;
         dst4 += 4;
     }
 }
 
 static void map2_pf(const SkMScalar mat[][4], const float* SK_RESTRICT src2,
                     int count, float* SK_RESTRICT dst4) {
-    double r;
     for (int n = 0; n < count; ++n) {
-        double sx = src2[0];
-        double sy = src2[1];
+        float sx = src2[0];
+        float sy = src2[1];
         for (int i = 0; i < 4; i++) {
-            r = mat[0][i] * sx + mat[1][i] * sy + mat[3][i];
-            dst4[i] = SkMScalarToFloat(r);
+            dst4[i] = mat[0][i] * sx + mat[1][i] * sy + mat[3][i];
         }
         src2 += 2;
         dst4 += 4;
     }
 }
 
 static void map2_pd(const SkMScalar mat[][4], const double* SK_RESTRICT src2,
                     int count, double* SK_RESTRICT dst4) {
     for (int n = 0; n < count; ++n) {
         double sx = src2[0];
@@ skipping 93 matching lines @@
     dst[SkMatrix::kMScaleX]  = SkMScalarToScalar(fMat[0][0]);
     dst[SkMatrix::kMSkewX]  = SkMScalarToScalar(fMat[1][0]);
     dst[SkMatrix::kMTransX] = SkMScalarToScalar(fMat[3][0]);
 
     dst[SkMatrix::kMSkewY]  = SkMScalarToScalar(fMat[0][1]);
     dst[SkMatrix::kMScaleY] = SkMScalarToScalar(fMat[1][1]);
     dst[SkMatrix::kMTransY] = SkMScalarToScalar(fMat[3][1]);
 
     return dst;
 }