There were other related xbl elements: chat-group and chat-conversation. We need to merge all three or none of them as there are co-related. And some other functionalities were dependent upon that. So we didn't merge these patches.
Bug 1538549 Comment 10 Edit History
Note: The actual edited comment in the bug view page will always show the original commenter’s name and original timestamp.
There were other related xbl elements: chat-group and chat-conversation. We need to merge all three or none of them as they are co-related. And some other functionalities were dependent upon that. So we didn't merge these patches.