Remove unused (by clients) SkUnitMapper (https://codereview.chromium.org/283273002/)

src/animator/SkDrawGradient.cpp

Index: src/animator/SkDrawGradient.cpp
diff --git a/src/animator/SkDrawGradient.cpp b/src/animator/SkDrawGradient.cpp
index c11559581b919c84e6eff35e831cb5b495d97ba9..70e5e4493e0e5f3560bff5e56697e443b77f2c0d 100644
--- a/src/animator/SkDrawGradient.cpp
+++ b/src/animator/SkDrawGradient.cpp
@@ -11,49 +11,6 @@
 #include "SkAnimateMaker.h"
 #include "SkAnimatorScript.h"
 #include "SkGradientShader.h"
-#include "SkUnitMapper.h"
-
-static SkScalar SkUnitToScalar(U16CPU x) {
-    return x / 65535.0f;
-}
-
-static U16CPU SkScalarToUnit(SkScalar x) {
-    SkScalar pin =  SkScalarPin(x, 0, SK_Scalar1);
-    return (int) (pin * 65535.0f);
-}
-
-class SkDrawGradientUnitMapper : public SkUnitMapper {
-public:
-    SkDrawGradientUnitMapper(SkAnimateMaker* maker, const char* script) : fMaker(maker), fScript(script) {
-    }
-
-    SK_DECLARE_UNFLATTENABLE_OBJECT()
-
-protected:
-    virtual uint16_t mapUnit16(uint16_t x) {
-        fUnit = SkUnitToScalar(x);
-        SkScriptValue value;
-        SkAnimatorScript engine(*fMaker, NULL, SkType_Float);
-        engine.propertyCallBack(GetUnitValue, &fUnit);
-        if (engine.evaluate(fScript, &value, SkType_Float))
-            x = SkScalarToUnit(value.fOperand.fScalar);
-        return x;
-    }
-
-    static bool GetUnitValue(const char* token, size_t len, void* unitPtr, SkScriptValue* value) {
-        if (SK_LITERAL_STR_EQUAL("unit", token, len)) {
-            value->fOperand.fScalar = *(SkScalar*) unitPtr;
-            value->fType = SkType_Float;
-            return true;
-        }
-        return false;
-    }
-
-    SkAnimateMaker* fMaker;
-    const char* fScript;
-    SkScalar fUnit;
-};
-
 
 #if SK_USE_CONDENSED_INFO == 0
 
@@ -67,13 +24,12 @@ const SkMemberInfo SkDrawGradient::fInfo[] = {
 
 DEFINE_GET_MEMBER(SkDrawGradient);
 
-SkDrawGradient::SkDrawGradient() : fUnitMapper(NULL) {
+SkDrawGradient::SkDrawGradient() {
 }
 
 SkDrawGradient::~SkDrawGradient() {
     for (int index = 0; index < fDrawColors.count(); index++)
         delete fDrawColors[index];
-    delete fUnitMapper;
 }
 
 bool SkDrawGradient::addChild(SkAnimateMaker& , SkDisplayable* child) {
@@ -138,8 +94,6 @@ void SkDrawGradient::onEndElement(SkAnimateMaker& maker) {
             }
         }
     }
-    if (unitMapper.size() > 0)
-        fUnitMapper = new SkDrawGradientUnitMapper(&maker, unitMapper.c_str());
     INHERITED::onEndElement(maker);
 }
 
@@ -176,7 +130,7 @@ SkShader* SkDrawLinearGradient::getShader() {
         return NULL;
     SkShader* shader = SkGradientShader::CreateLinear((SkPoint*)points.begin(),
         fColors.begin(), offsets.begin(), fColors.count(), (SkShader::TileMode) tileMode,
-        fUnitMapper, 0, getMatrix());
+        0, getMatrix());
     SkAutoTDelete<SkShader> autoDel(shader);
     (void)autoDel.detach();
     return shader;
@@ -211,7 +165,7 @@ SkShader* SkDrawRadialGradient::getShader() {
         return NULL;
     SkShader* shader = SkGradientShader::CreateRadial(center,
         radius, fColors.begin(), offsets.begin(), fColors.count(), (SkShader::TileMode) tileMode,
-        fUnitMapper, 0, getMatrix());
+        0, getMatrix());
     SkAutoTDelete<SkShader> autoDel(shader);
     (void)autoDel.detach();
     return shader;