Place chicken, onion, carrot, chile, marjoram, curry powder, salt, stock and wine in large pot. Bring to boil. Partial cover, reduce heat and simmer for 20 minutes. Add potatoes, simmer for 15 minutes. Remove chicken, let cool and shred meat. Return to pot along with corn. Heat just to boiling point. To assemble, spread chicken on tortilla, top with remaining ingredients. Fold and serve.