General cleanup and additions to mousewheel debugging code (which is #ifdef DEBUG_scroll). r=hyatt. git-svn-id: svn://10.0.0.236/trunk@57964 18797224-902f-48f8-a5cc-f745e15eee43
General cleanup and additions to mousewheel debugging code (which is #ifdef DEBUG_scroll). r=hyatt. git-svn-id: svn://10.0.0.236/trunk@57964 18797224-902f-48f8-a5cc-f745e15eee43