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/choice.h

@@ -77,6 +77,8 @@ public:
     static wxVisualAttributes
     GetClassDefaultAttributes(wxWindowVariant variant = wxWINDOW_VARIANT_NORMAL);
 
+    virtual bool IsOwnGtkWindow( GdkWindow *window );
+
 protected:
     wxList m_clientList;    // contains the client data for the items
 
@@ -91,8 +93,6 @@ protected:
 
     virtual wxSize DoGetBestSize() const;
 
-    virtual bool IsOwnGtkWindow( GdkWindow *window );
-
 private:
     // common part of Create() and DoAppend()
     int GtkAddHelper(GtkWidget *menu, int pos, const wxString& item);