SkGradientShader.cpp: fix build when SK_SUPPORT_GPU=0

src/effects/gradients/SkGradientShader.cpp

 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "Sk4fLinearGradient.h"
 #include "SkGradientShaderPriv.h"
 #include "SkLinearGradient.h"
@@ skipping 210 matching lines @@
     desc.fPos = fOrigPos;
     desc.fCount = fColorCount;
     desc.fTileMode = fTileMode;
     desc.fGradFlags = fGradFlags;
 
     const SkMatrix& m = this->getLocalMatrix();
     desc.fLocalMatrix = m.isIdentity() ? nullptr : &m;
     desc.flatten(buffer);
 }
 
+#if SK_SUPPORT_GPU
+
 static inline bool close_to_one_half(const SkFixed& val) {
     return SkScalarNearlyEqual(SkFixedToScalar(val), SK_ScalarHalf);
 }
 
 GrGradientEffect::ColorType GrGradientEffect::determineColorTypeAndNumHardStops(
         const SkGradientShaderBase& shader) {
 #if GR_GL_USE_ACCURATE_HARD_STOP_GRADIENTS
     if (shader.fOrigPos) {
         if (4 == shader.fColorCount) {
             if (SkScalarNearlyEqual(shader.fOrigPos[0], 0.0f) &&
@@ skipping 23 matching lines @@
         if (2 == shader.fColorCount) {
             return kTwo_ColorType;
         } else if (3 == shader.fColorCount &&
                    close_to_one_half(shader.getRecs()[1].fPos)) {
             return kThree_ColorType;
         }
     }
 
     return kTexture_ColorType;
 }
+#endif
 
 void SkGradientShaderBase::FlipGradientColors(SkColor* colorDst, Rec* recDst,
                                               SkColor* colorSrc, Rec* recSrc,
                                               int count) {
     SkAutoSTArray<8, SkColor> colorsTemp(count);
     for (int i = 0; i < count; ++i) {
         int offset = count - i - 1;
         colorsTemp[i] = colorSrc[offset];
     }
     if (count > 2) {
@@ skipping 1139 matching lines @@
             (*stops)[i] = stop;
             stop = i < outColors - 1 ? stop + random->nextUScalar1() * (1.f - stop) : 1.f;
         }
     }
     *tm = static_cast<SkShader::TileMode>(random->nextULessThan(SkShader::kTileModeCount));
 
     return outColors;
 }
 
 #endif