First part of bug 11784 - making baby steps to simplify future regression testing :)
Merging these variables uncovered an issue with event handling in DRT. Mouse clicks in native widgets would turn [NSApp currentEvent] from nil to NSLeftMouseUp forever, so lastEventIsMouseUp() started to misbehave and caused m_mouseDown to be reset to false in handleMousePressed().
I couldn't find any way to work around this issue in DRT, so I had to change WebCore (added a check to event timestamps). Luckily, the impact seems to be minor.
Created attachment 11804 [details]
Comment on attachment 11804 [details]
Committed revision 18158.