Refactor wxTextEntry::AutoComplete() to simply call DoAutoCompleteXXX().

No real changes, just make the public AutoComplete() non-virtual and add
virtual DoAutoCompleteXXX() methods to make it easier to add new public
AutoComplete() overloads in the upcoming commits.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@67509 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/gtk/textentry.cpp

@@ -237,7 +237,7 @@ void wxTextEntry::GetSelection(long *from, long *to) const
 // auto completion
 // ----------------------------------------------------------------------------
 
-bool wxTextEntry::AutoComplete(const wxArrayString& choices)
+bool wxTextEntry::DoAutoCompleteStrings(const wxArrayString& choices)
 {
     GtkEntry * const entry = GTK_ENTRY(GetEditable());
     wxCHECK_MSG(entry, false, "auto completion doesn't work with this control");