make access specifiers for the virtual functions match their access in the base class (patch 1400131)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@37393 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/univ/slider.h

@@ -121,6 +121,10 @@ public:
     // for wxStdSliderButtonInputHandler
     wxScrollThumb& GetThumb() { return m_thumb; }
 
+    virtual bool PerformAction(const wxControlAction& action,
+                               long numArg = 0,
+                               const wxString& strArg = wxEmptyString);
+
 protected:
     enum
     {
@@ -132,10 +136,6 @@ protected:
     virtual void DoDraw(wxControlRenderer *renderer);
     virtual wxBorder GetDefaultBorder() const { return wxBORDER_NONE; }
 
-    virtual bool PerformAction(const wxControlAction& action,
-                               long numArg = 0,
-                               const wxString& strArg = wxEmptyString);
-
     // event handlers
     void OnSize(wxSizeEvent& event);