Implementing blink side of 'invalid' AutocompleteErrorEvent#reason

Source/core/html/HTMLFormControlElement.cpp

Index: Source/core/html/HTMLFormControlElement.cpp
diff --git a/Source/core/html/HTMLFormControlElement.cpp b/Source/core/html/HTMLFormControlElement.cpp
index 2018311b7fbc74410bd3e13c90d951406cbf33bf..ce68f5ae6eec41b74a4749204756126e51bd82bb 100644
--- a/Source/core/html/HTMLFormControlElement.cpp
+++ b/Source/core/html/HTMLFormControlElement.cpp
@@ -398,10 +398,12 @@ void HTMLFormControlElement::hideVisibleValidationMessage()
         m_validationMessage->requestToHideMessage();
 }
 
-bool HTMLFormControlElement::checkValidity(Vector<RefPtr<FormAssociatedElement> >* unhandledInvalidControls)
+bool HTMLFormControlElement::checkValidity(Vector<RefPtr<FormAssociatedElement> >* unhandledInvalidControls, CheckValidityDispatchEvents dispatchEvents)
 {
     if (!willValidate() || isValidFormControlElement())
         return true;
+    if (dispatchEvents == CheckValidityDispatchEventsNone)
+        return false;
     // An event handler can deref this object.
     RefPtr<HTMLFormControlElement> protector(this);
     RefPtr<Document> originalDocument(document());