Stub out GetMatchingPair() for now to allow us to use the generic wxDVC on Cocoa.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@58783 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/osx/dnd.h

@@ -55,6 +55,8 @@ class WXDLLIMPEXP_CORE wxDropTarget: public wxDropTargetBase
     virtual bool OnDrop(wxCoord x, wxCoord y);
     virtual wxDragResult OnData(wxCoord x, wxCoord y, wxDragResult def);
     virtual bool GetData();
+    // NOTE: This is needed by the generic wxDataViewCtrl, not sure how to implement. 
+    virtual wxDataFormat GetMatchingPair();
 
     bool CurrentDragHasSupportedFormat() ;
     void SetCurrentDragPasteboard( void* dragpasteboard ) { m_currentDragPasteboard = dragpasteboard ; }