[polari] chatroomManager: Use contact alias as channel name if available

[Florian Müllner <fmuellner src gnome org>]

commit 8b4dec521f3564da82c5112b0c1dbe501ebe3a9b
Author: Florian Müllner <fmuellner gnome org>
Date:   Thu Oct 1 16:51:59 2015 +0200

    chatroomManager: Use contact alias as channel name if available
    
    We use TpContact:alias to represent other users in the user list
    and elsewhere, so for private conversations it makes for a better
    channel name than the channel identifier in case the two differ
    (which may happen as the latter is always lowercase).
    
    https://bugzilla.gnome.org/show_bug.cgi?id=755722

 src/chatroomManager.js |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
---
diff --git a/src/chatroomManager.js b/src/chatroomManager.js
index 0458a1e..7a7b08e 100644
--- a/src/chatroomManager.js
+++ b/src/chatroomManager.js
@@ -209,7 +209,9 @@ const _ChatroomManager = new Lang.Class({
 
     _ensureRoomForChannel: function(channel) {
         let account = channel.connection.get_account();
-        let channelName = channel.identifier;
+        let targetContact = channel.target_contact;
+        let channelName = targetContact ? targetContact.alias
+                                        : channel.identifier;
         let room = this._ensureRoom(account, channelName, channel.handle_type);
         room.channel = channel;
         return room;