Use initial values for flood/lighting-color/flood-opacity when detached

third_party/WebKit/Source/core/svg/SVGFESpecularLightingElement.cpp

Index: third_party/WebKit/Source/core/svg/SVGFESpecularLightingElement.cpp
diff --git a/third_party/WebKit/Source/core/svg/SVGFESpecularLightingElement.cpp b/third_party/WebKit/Source/core/svg/SVGFESpecularLightingElement.cpp
index 09f2cc530576208c59ab9401c2cb3f218c6daf29..92c59c327dec8885321f05d079d1111a9a061efd 100644
--- a/third_party/WebKit/Source/core/svg/SVGFESpecularLightingElement.cpp
+++ b/third_party/WebKit/Source/core/svg/SVGFESpecularLightingElement.cpp
@@ -132,12 +132,11 @@ PassRefPtrWillBeRawPtr<FilterEffect> SVGFESpecularLightingElement::build(SVGFilt
     if (!input1)
         return nullptr;
 
-    LayoutObject* layoutObject = this->layoutObject();
-    if (!layoutObject)
-        return nullptr;
-
-    ASSERT(layoutObject->style());
-    Color color = layoutObject->style()->svgStyle().lightingColor();
+    Color color = Color::white;
+    if (LayoutObject* layoutObject = this->layoutObject()) {
+        ASSERT(layoutObject->style());
+        color = layoutObject->styleRef().svgStyle().lightingColor();
+    }
 
     const SVGFELightElement* lightNode = SVGFELightElement::findLightElement(*this);
     RefPtr<LightSource> lightSource = lightNode ? lightNode->lightSource(filter) : nullptr;