Backout 5820d44601c1 (bug 520992) for build bustage
Bug 369180: override nsIAuthPromptProvider implementation on search suggestion callbacks to avoid proxy authentication dialog popping up while entering text in the search bar, r=mayhemer

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extra : rebase_source : e662bf239ad508f911f213ef9de61bdd0abbef8a
Bug 853858: Move PeerConnectionTest instance reference into global scope r=jesup,whimboo
Bug 852014 - Defect - Issues downloading and installing msi. r=sfoster.