Updated to Chrome 45 (2454) moved from SVN to git.

core/html/HTMLOutputElement.idl

Index: core/html/HTMLOutputElement.idl
diff --git a/core/html/HTMLOutputElement.idl b/core/html/HTMLOutputElement.idl
index c9fe3b26553ef6cd30bb481fa8cc61325b55a82d..957a9aa8fee0d9f623036f01fd5b8ae7db7a7c52 100644
--- a/core/html/HTMLOutputElement.idl
+++ b/core/html/HTMLOutputElement.idl
@@ -22,9 +22,11 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+// https://html.spec.whatwg.org/#the-output-element
+
 interface HTMLOutputElement : HTMLElement {
     [PutForwards=value] readonly attribute DOMSettableTokenList htmlFor;
-    [ImplementedAs=formOwner] readonly attribute HTMLFormElement form;
+    [ImplementedAs=formOwner] readonly attribute HTMLFormElement? form;
     [Reflect] attribute DOMString name;
 
     readonly attribute DOMString type;
@@ -35,7 +37,8 @@ interface HTMLOutputElement : HTMLElement {
     readonly attribute ValidityState validity;
     readonly attribute DOMString validationMessage;
     boolean checkValidity();
-    void setCustomValidity([TreatUndefinedAs=NullString] DOMString? error);
+    boolean reportValidity();
+    void setCustomValidity(DOMString error);
 
     readonly attribute NodeList labels;
 };