remove unused SkFixed and SkFract functions

src/utils/SkUnitMappers.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 "SkUnitMappers.h"
 #include "SkFlattenableBuffers.h"
 
+
 SkDiscreteMapper::SkDiscreteMapper(int segments) {
     if (segments < 2) {
         fSegments = 0;
         fScale = 0;
     } else {
         if (segments > 0xFFFF) {
             segments = 0xFFFF;
         }
         fSegments = segments;
-        fScale = SK_Fract1 / (segments - 1);
+        fScale = (1 << 30) / (segments - 1);
     }
 }
 
 uint16_t SkDiscreteMapper::mapUnit16(uint16_t input) {
     SkFixed x = input * fSegments >> 16;
     x = x * fScale >> 14;
     x += x << 15 >> 31; // map 0x10000 to 0xFFFF
     return SkToU16(x);
 }
 
@@ skipping 19 matching lines @@
         16bits and pi/2 is 17bits, so we shift down our pi const before we mul
     */
     SkFixed rads = (unsigned)(input * (SK_FixedPI >> 2)) >> 15;
     SkFixed x = SkFixedCos(rads);
     x += x << 15 >> 31; // map 0x10000 to 0xFFFF
     return SkToU16(x);
 }
 
 SkCosineMapper::SkCosineMapper(SkFlattenableReadBuffer& rb)
     : SkUnitMapper(rb) {}