Bug 856858 - Always add observer to observe alert windows closing. r=Mossop, a=akeybl
Bug 877057 - Add a download limit to Sync Engine fetches. r=mconnor, a=akeybl
Bug 876856 - Check if PeerConnection is closed before accessing MediaStreamList. r=ekr, a=akeybl
Bug 878509 - Restore the HTMLImageElement.lowsrc, x, y attributes that were unintentionally removed. r=smaug, a=akeybl