Fix a crash after removing button from site settings popup

chrome/browser/ui/views/website_settings/chosen_object_row.cc

Index: chrome/browser/ui/views/website_settings/chosen_object_row.cc
diff --git a/chrome/browser/ui/views/website_settings/chosen_object_row.cc b/chrome/browser/ui/views/website_settings/chosen_object_row.cc
index b655d44da06096b13334a763b874e53056144884..ddf13aa96b150817f8596aae87ba0bcb1e1582c1 100644
--- a/chrome/browser/ui/views/website_settings/chosen_object_row.cc
+++ b/chrome/browser/ui/views/website_settings/chosen_object_row.cc
@@ -74,9 +74,8 @@ void ChosenObjectRow::ButtonPressed(views::Button* sender,
       WebsiteSettingsUI::GetChosenObjectIcon(*info_, true);
   icon_->SetImage(image.ToImageSkia());
 
-  RemoveChildView(delete_button_);
-  delete delete_button_;
-  delete_button_ = nullptr;
+  DCHECK(delete_button_->visible());
+  delete_button_->SetVisible(false);
 
   for (ChosenObjectRowObserver& observer : observer_list_)
     observer.OnChosenObjectDeleted(*info_);