Remove kernelUnitLength plumbing

Source/platform/graphics/filters/FELighting.cpp

 /*
  * Copyright (C) 2010 University of Szeged
  * Copyright (C) 2010 Zoltan Herczeg
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
@@ skipping 21 matching lines @@
 #include "SkPoint3.h"
 #include "platform/graphics/filters/DistantLightSource.h"
 #include "platform/graphics/filters/PointLightSource.h"
 #include "platform/graphics/filters/SkiaImageFilterBuilder.h"
 #include "platform/graphics/filters/SpotLightSource.h"
 
 namespace blink {
 
 FELighting::FELighting(Filter* filter, LightingType lightingType, const Color& lightingColor, float surfaceScale,
     float diffuseConstant, float specularConstant, float specularExponent,
-    float kernelUnitLengthX, float kernelUnitLengthY, PassRefPtr<LightSource> lightSource)
+    PassRefPtr<LightSource> lightSource)
     : FilterEffect(filter)
     , m_lightingType(lightingType)
     , m_lightSource(lightSource)
     , m_lightingColor(lightingColor)
     , m_surfaceScale(surfaceScale)
     , m_diffuseConstant(std::max(diffuseConstant, 0.0f))
     , m_specularConstant(std::max(specularConstant, 0.0f))
     , m_specularExponent(std::min(std::max(specularExponent, 1.0f), 128.0f))
-    , m_kernelUnitLengthX(kernelUnitLengthX)
-    , m_kernelUnitLengthY(kernelUnitLengthY)
 {
 }
 
 FloatRect FELighting::mapPaintRect(const FloatRect& rect, bool)
 {
     FloatRect result = rect;
     // The areas affected need to be a pixel bigger to accommodate the Sobel kernel.
     result.inflate(1);
     return result;
 }
@@ skipping 33 matching lines @@
             return adoptRef(SkLightingImageFilter::CreateSpotLitSpecular(location, target, specularExponent, limitingConeAngle, lightColor.rgb(), m_surfaceScale, m_specularConstant, m_specularExponent, input.get(), &rect));
         return adoptRef(SkLightingImageFilter::CreateSpotLitDiffuse(location, target, specularExponent, limitingConeAngle, lightColor.rgb(), m_surfaceScale, m_diffuseConstant, input.get(), &rect));
     }
     default:
         ASSERT_NOT_REACHED();
         return nullptr;
     }
 }
 
 } // namespace blink