extra space between tabs after dragging a tab to extreme left r=mconnor git-svn-id: svn://10.0.0.236/trunk@232780 18797224-902f-48f8-a5cc-f745e15eee43
extra space between tabs after dragging a tab to extreme left r=mconnor git-svn-id: svn://10.0.0.236/trunk@232780 18797224-902f-48f8-a5cc-f745e15eee43