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/gtk/menu.h

@@ -69,11 +69,6 @@ public:
 
     virtual ~wxMenu();
 
-    // implement base class virtuals
-    virtual wxMenuItem* DoAppend(wxMenuItem *item);
-    virtual wxMenuItem* DoInsert(size_t pos, wxMenuItem *item);
-    virtual wxMenuItem* DoRemove(wxMenuItem *item);
-
     // TODO: virtual void SetTitle(const wxString& title);
 
     // implementation
@@ -84,6 +79,11 @@ public:
     GtkWidget       *m_owner;
     GtkAccelGroup   *m_accel;
 
+protected:
+    virtual wxMenuItem* DoAppend(wxMenuItem *item);
+    virtual wxMenuItem* DoInsert(size_t pos, wxMenuItem *item);
+    virtual wxMenuItem* DoRemove(wxMenuItem *item);
+
 private:
     // common code for all constructors:
     void Init();