siblingTabsOf
Bug 685692 - "Move to Group" should always insert the moved tab into the same place
updateStack
isCollapsedStack
isStackedTab
Mark collapsed for group-collapsed tabs
_setMenuitemAttributes
"unread" attribute cleanup
"selected" attribute cleanup
Cache selectedTabs
Adopt visibleTabs
Select tab inside stack
Reverse _tabHistory
Allow Ctrl+Tab to jump between groups
Fix tab stack restoration when undo close tab
Fix moving tab onto another
Add "group-selected" attribute
"group-collapsed" cleanup
TabBlur
CustomEvent
Move "Select All Tabs" to all tabs popup