Generate toCSSFooValue() for CSS child values

Source/core/css/CSSPrimitiveValue.h

Index: Source/core/css/CSSPrimitiveValue.h
diff --git a/Source/core/css/CSSPrimitiveValue.h b/Source/core/css/CSSPrimitiveValue.h
index 4d2e614787acbe021ed828ba2380022ff76da2f0..1cc20c106f11213d300158bde73d99db86cf73f3 100644
--- a/Source/core/css/CSSPrimitiveValue.h
+++ b/Source/core/css/CSSPrimitiveValue.h
@@ -385,20 +385,7 @@ private:
     } m_value;
 };
 
-inline CSSPrimitiveValue* toCSSPrimitiveValue(CSSValue* value)
-{
-    ASSERT_WITH_SECURITY_IMPLICATION(!value || value->isPrimitiveValue());
-    return static_cast<CSSPrimitiveValue*>(value);
-}
-
-inline const CSSPrimitiveValue* toCSSPrimitiveValue(const CSSValue* value)
-{
-    ASSERT_WITH_SECURITY_IMPLICATION(!value || value->isPrimitiveValue());
-    return static_cast<const CSSPrimitiveValue*>(value);
-}
-
-// Catch unneeded cast.
-void toCSSPrimitiveValue(const CSSPrimitiveValue*);
+DEFINE_CSS_VALUE_TYPE_CASTS(PrimitiveValue);
 
 } // namespace WebCore