Index: Source/core/html/HTMLButtonElement.idl |
diff --git a/Source/core/html/HTMLButtonElement.idl b/Source/core/html/HTMLButtonElement.idl |
index 7436e2638ae9774937192883b8b9a9a9471c4c61..7845755cff043ba4c5ade1f803b1fec5c12eccdc 100644 |
--- a/Source/core/html/HTMLButtonElement.idl |
+++ b/Source/core/html/HTMLButtonElement.idl |
@@ -35,7 +35,7 @@ interface HTMLButtonElement : HTMLElement { |
readonly attribute ValidityState validity; |
readonly attribute DOMString validationMessage; |
boolean checkValidity(); |
- void setCustomValidity([TreatNullAs=NullString, TreatUndefinedAs=NullString] DOMString error); |
+ void setCustomValidity([TreatUndefinedAs=NullString] DOMString? error); |
readonly attribute NodeList labels; |
}; |