9bb12f6f87
When messages are added to the message list, we create a container for those, however since now the messages are actor themselves we can just create a list item actor that holds the message actor and refer to the message parent in order to get their container. This allows to remove the obj container map we used, using the native clutter parent-child hierarchy and handle signal connections cleanly. https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/559