scope observerService so it isn't held past embedding shutdown r=smontagu moa=adamlock git-svn-id: svn://10.0.0.236/trunk@121938 18797224-902f-48f8-a5cc-f745e15eee43
scope observerService so it isn't held past embedding shutdown r=smontagu moa=adamlock git-svn-id: svn://10.0.0.236/trunk@121938 18797224-902f-48f8-a5cc-f745e15eee43