Not Remove Non-Closable Arc Popup When Close Button is Pressed

ui/message_center/notification_delegate_views.cc

Index: ui/message_center/notification_delegate_views.cc
diff --git a/ui/message_center/notification_delegate_views.cc b/ui/message_center/notification_delegate_views.cc
index 1d12a307f0813d5bdc52c49ea854d01987af809f..cf00585febd88213f6b2775f995a6a5925820fb5 100644
--- a/ui/message_center/notification_delegate_views.cc
+++ b/ui/message_center/notification_delegate_views.cc
@@ -8,7 +8,10 @@
 
 namespace message_center {
 
-std::unique_ptr<CustomContent> NotificationDelegate::CreateCustomContent() {
+class MessageView;
+
+std::unique_ptr<CustomContent> NotificationDelegate::CreateCustomContent(
+    MessageView* message_view) {
   return nullptr;
 }