Update renderer in core/css.

Source/core/css/ComputedStyleCSSValueMapping.h

Index: Source/core/css/ComputedStyleCSSValueMapping.h
diff --git a/Source/core/css/ComputedStyleCSSValueMapping.h b/Source/core/css/ComputedStyleCSSValueMapping.h
index 9f31eb4935d8318023a4bd71bb339f8c0a046aca..ca8b9fa2c586d1a54ccc73a7d1d241033eac714c 100644
--- a/Source/core/css/ComputedStyleCSSValueMapping.h
+++ b/Source/core/css/ComputedStyleCSSValueMapping.h
@@ -21,7 +21,7 @@ class Node;
 class ComputedStyleCSSValueMapping {
 public:
     // FIXME: Resolve computed auto alignment in applyProperty/ComputedStyle and remove this non-const styledNode parameter.
-    static PassRefPtrWillBeRawPtr<CSSValue> get(CSSPropertyID, const ComputedStyle&, const LayoutObject* renderer = nullptr, Node* styledNode = nullptr, bool allowVisitedStyle = false);
+    static PassRefPtrWillBeRawPtr<CSSValue> get(CSSPropertyID, const ComputedStyle&, const LayoutObject* = nullptr, Node* styledNode = nullptr, bool allowVisitedStyle = false);
 private:
     static PassRefPtrWillBeRawPtr<CSSPrimitiveValue> currentColorOrValidColor(const ComputedStyle&, const StyleColor&);
     static PassRefPtrWillBeRawPtr<CSSValue> valueForShadowData(const ShadowData&, const ComputedStyle&, bool useSpread);