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848b49f05b
The Mac now supports native combo box widgets so it no longer will crash in GetProperty with a null mWidget field. Modified nsComboboxControlFrame::HandleEvents. MouseExit from the combox rect now initiates mouse capture on the drop-down list. Modified nsCSSFrameConstructor::ConstructSelectFrame to initialize the drop-down list for frame-based comboboxes as hidden. Added a nsIListControlFrame::CaptureMouseEvents method. Implemented nsListControlFrame::CaptureMouseEvents.