Bug 1035439 - Part 1: Clear private undo close tab data when leaving private browsing. r=margaret
Bug 1035439 - Part 2: Show closed tabs of the current private state in RecentTabsPanel. r=margaret
Bug 1035439 - Part 3: Use selected tab private state in openUrlAndStopEditing. r=margaret
Bug 1035439 - Part 4: Change undoCloseTab to accept closed tab data. r=margaret