More border rationalisation. GetDefaultBorder is now mostly defined in base class files.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@49893 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/stattext.h

@@ -72,6 +72,9 @@ public:
 
 protected:      // functions required for wxST_ELLIPSIZE_* support
 
+    // choose the default border for this window
+    virtual wxBorder GetDefaultBorder() const { return wxBORDER_NONE; }
+
     // just calls RemoveMarkup & Ellipsize on the original label.
     virtual wxString GetEllipsizedLabelWithoutMarkup() const;