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/button.h

@@ -100,17 +100,18 @@ public:
     virtual void Release();
     virtual void Click();
 
-protected:
     virtual bool PerformAction(const wxControlAction& action,
                                long numArg = -1,
                                const wxString& strArg = wxEmptyString);
+
+    virtual bool CanBeHighlighted() const { return true; }
+
+protected:
     virtual wxSize DoGetBestClientSize() const;
     
     virtual bool DoDrawBackground(wxDC& dc);
     virtual void DoDraw(wxControlRenderer *renderer);
 
-    virtual bool CanBeHighlighted() const { return true; }
-
     // common part of all ctors
     void Init();