findLightSource   175 Source/core/svg/SVGFEDiffuseLightingElement.cpp     RefPtr<LightSource> lightSource = SVGFELightElement::findLightSource(*this);
findLightSource    36 Source/core/svg/SVGFELightElement.h     static PassRefPtr<LightSource> findLightSource(const SVGElement&);
findLightSource   182 Source/core/svg/SVGFESpecularLightingElement.cpp     RefPtr<LightSource> lightSource = SVGFELightElement::findLightSource(*this);