remove unused (by clients) SkUnitMapper

samplecode/SampleAll.cpp

Index: samplecode/SampleAll.cpp
diff --git a/samplecode/SampleAll.cpp b/samplecode/SampleAll.cpp
index ea1f14328816fbba47ed2b2655438082621eea07..92fe258dd6a4ed6652e68cc04ca3c1010162ef0f 100644
--- a/samplecode/SampleAll.cpp
+++ b/samplecode/SampleAll.cpp
@@ -36,7 +36,6 @@
 #include "SkRandom.h"
 #include "SkTransparentShader.h"
 #include "SkTypeface.h"
-#include "SkUnitMappers.h"
 #include "SkUtils.h"
 #include "SkXfermode.h"
 
@@ -368,10 +367,8 @@ protected:
         SkScalar* linearPos = NULL;
         int linearCount = 2;
         SkShader::TileMode linearMode = SkShader::kMirror_TileMode;
-        SkUnitMapper* linearMapper = new SkDiscreteMapper(3);
-        SkAutoUnref unmapLinearMapper(linearMapper);
         SkShader* linear = SkGradientShader::CreateLinear(linearPoints,
-            linearColors, linearPos, linearCount, linearMode, linearMapper);
+            linearColors, linearPos, linearCount, linearMode);
 
         SkPoint radialCenter = { SkIntToScalar(25), SkIntToScalar(25) };
         SkScalar radialRadius = SkIntToScalar(25);
@@ -379,11 +376,9 @@ protected:
         SkScalar radialPos[] = { 0, SkIntToScalar(3) / 5, SkIntToScalar(1)};
         int radialCount = 3;
         SkShader::TileMode radialMode = SkShader::kRepeat_TileMode;
-        SkUnitMapper* radialMapper = new SkCosineMapper();
-        SkAutoUnref unmapRadialMapper(radialMapper);
         SkShader* radial = SkGradientShader::CreateRadial(radialCenter,
             radialRadius, radialColors, radialPos, radialCount,
-            radialMode, radialMapper);
+            radialMode);
 
         SkTransparentShader* transparentShader = new SkTransparentShader();
         SkEmbossMaskFilter::Light light;