Backed out changeset 7fbcaefd5052 (bug 1060869)
Backed out changeset 2a95a3663cc2 (bug 923302)
Backed out changeset 61b0f5391e9d (bug 1060869)
Backed out changeset a5d577ebb3d0 (bug 1060869)
Backed out changeset f6989ebe8e1c (bug 1060869)
Backed out changeset f993ad4dc8f6 (bug 1060869)
Backed out changeset b42bc7db8a8e (bug 1057904)
Backed out changeset 62c4e3d64b7d (bug 1057904) for permafailure mulet test
Bug 1095438 - Don't leave dormant state while detached from the DOM tree. r=cpearce