Bug 901312 - crash in mozilla::dom::ContentParent::ActorDestroy @ nsFrameMessageManager::Disconnect, r=jlebar

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extra : rebase_source : a03a8b0339fc7200ed2430dcfaa81986fef743e7
Bug 899519 -  Use "description" instead of "mime type name" for filter name for accept attribute. r=mounir,bz