Generate toCSSFooValue for CSSFunctionValue and CSSSVGDocumentValue

Source/core/css/CSSFunctionValue.h

Index: Source/core/css/CSSFunctionValue.h
diff --git a/Source/core/css/CSSFunctionValue.h b/Source/core/css/CSSFunctionValue.h
index d4e7e4d83ddc384bf86a23194c15dd96bce4a84d..ee5c5d9a82bd11cdcd70aa9c0367c2e848ea0906 100644
--- a/Source/core/css/CSSFunctionValue.h
+++ b/Source/core/css/CSSFunctionValue.h
@@ -59,20 +59,7 @@ private:
     RefPtr<CSSValueList> m_args;
 };
 
-inline CSSFunctionValue* toCSSFunctionValue(CSSValue* value)
-{
-    ASSERT_WITH_SECURITY_IMPLICATION(value->isFunctionValue());
-    return static_cast<CSSFunctionValue*>(value);
-}
-
-inline const CSSFunctionValue* toCSSFunctionValue(const CSSValue* value)
-{
-    ASSERT_WITH_SECURITY_IMPLICATION(value->isFunctionValue());
-    return static_cast<const CSSFunctionValue*>(value);
-}
-
-// Catch any unneeded cast.
-void toCSSFunctionValue(const CSSFunctionValue*);
+DEFINE_CSS_VALUE_TYPE_CASTS(FunctionValue);
 
 } // namespace WebCore