Bug 1008772 part.1 tabs should handle non-printable keys with keydown event handlers in the system group rather than keypress event handlers in the normal group r=smaug+enndeakin
Bug 1008772 part.2 Add tests for tabbrowser key navigation which isn't blocked by content r=enndeakin
Bug 1008772 part.3 Fix new orages caused by tabbrowser consuming some key events at keydown r=smaug