Backed out changeset 77f4622e2000 (bug 979481)
Backed out changeset 670fb9adcd29 (bug 979481)
Backed out changeset 5423f1b0599e (bug 979481)
Backed out changeset 5d9fb147f723 (bug 979481)
Backed out changeset 557c7be2fdb6 (bug 979481) for causing regression Bug 981202