Drugs used in chemotherapy use different ways to stop tumor cells from dividing so they stop growing or die. Biological therapies such as gefitinib may interfere with the growth of the tumor cells and slow the growth of the tumor. Combining chemotherapy with gefitinib may kill more tumor cells. Phase II trial to study the effectiveness of combining chemotherapy with gefitinib in treating patients who have metastatic transitional cell cancer of the urothelium