Backed out 5 changesets (bug 905493, bug 920125, bug 919603) for mochitest orange on a CLOSED TREE.

Backed out changeset ccef656b2973 (bug 919603)
Backed out changeset 4b29ce0b2fff (bug 919603)
Backed out changeset b0a051ec55b7 (bug 919603)
Backed out changeset baa9a774aad1 (bug 920125)
Backed out changeset e03276bf4eaa (bug 905493)