Remove kernelUnitLength plumbing

Source/core/svg/SVGFEDiffuseLightingElement.cpp

Index: Source/core/svg/SVGFEDiffuseLightingElement.cpp
diff --git a/Source/core/svg/SVGFEDiffuseLightingElement.cpp b/Source/core/svg/SVGFEDiffuseLightingElement.cpp
index 9ccbbce97aadc313edf7daa8eaf3de1c911e3d94..291e05291576696d03112be88f808308806c113f 100644
--- a/Source/core/svg/SVGFEDiffuseLightingElement.cpp
+++ b/Source/core/svg/SVGFEDiffuseLightingElement.cpp
@@ -67,11 +67,6 @@ bool SVGFEDiffuseLightingElement::setFilterEffectAttribute(FilterEffect* effect,
         return diffuseLighting->setSurfaceScale(m_surfaceScale->currentValue()->value());
     if (attrName == SVGNames::diffuseConstantAttr)
         return diffuseLighting->setDiffuseConstant(m_diffuseConstant->currentValue()->value());
-    if (attrName == SVGNames::kernelUnitLengthAttr) {
-        bool changedX = diffuseLighting->setKernelUnitLengthX(m_kernelUnitLength->firstNumber()->currentValue()->value());
-        bool changedY = diffuseLighting->setKernelUnitLengthY(m_kernelUnitLength->secondNumber()->currentValue()->value());
-        return changedX || changedY;
-    }
 
     LightSource* lightSource = const_cast<LightSource*>(diffuseLighting->lightSource());
     const SVGFELightElement* lightElement = SVGFELightElement::findLightElement(*this);
@@ -100,7 +95,6 @@ void SVGFEDiffuseLightingElement::svgAttributeChanged(const QualifiedName& attrN
 {
     if (attrName == SVGNames::surfaceScaleAttr
         || attrName == SVGNames::diffuseConstantAttr
-        || attrName == SVGNames::kernelUnitLengthAttr
         || attrName == SVGNames::lighting_colorAttr) {
         SVGElement::InvalidationGuard invalidationGuard(this);
         primitiveAttributeChanged(attrName);
@@ -145,7 +139,7 @@ PassRefPtrWillBeRawPtr<FilterEffect> SVGFEDiffuseLightingElement::build(SVGFilte
 
     RefPtr<LightSource> lightSource = lightNode->lightSource(filter);
     RefPtrWillBeRawPtr<FilterEffect> effect = FEDiffuseLighting::create(filter, color, m_surfaceScale->currentValue()->value(), m_diffuseConstant->currentValue()->value(),
-        kernelUnitLengthX()->currentValue()->value(), kernelUnitLengthY()->currentValue()->value(), lightSource.release());
+        lightSource.release());
     effect->inputEffects().append(input1);
     return effect.release();
 }