Move a couple standard virtuals to protected sections so they can be overridden in derived classes

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@71896 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/generic/headerctrlg.h

@@ -48,6 +48,10 @@ public:
 
     virtual ~wxHeaderCtrl();
 
+protected:
+    virtual wxSize DoGetBestSize() const;
+
+    
 private:
     // implement base class pure virtuals
     virtual void DoSetCount(unsigned int count);
@@ -59,9 +63,6 @@ private:
     virtual void DoSetColumnsOrder(const wxArrayInt& order);
     virtual wxArrayInt DoGetColumnsOrder() const;
 
-    // override wxWindow methods which must be implemented by a new control
-    virtual wxSize DoGetBestSize() const;
-
     // common part of all ctors
     void Init();