Fixing circular loop between sessiondata service and (pref service and observer service) by using WeakReference support in both. r=ben git-svn-id: svn://10.0.0.236/trunk@196165 18797224-902f-48f8-a5cc-f745e15eee43
Fixing circular loop between sessiondata service and (pref service and observer service) by using WeakReference support in both. r=ben git-svn-id: svn://10.0.0.236/trunk@196165 18797224-902f-48f8-a5cc-f745e15eee43