Followup to bug 469818 - Refactor test_textboxes.* files, re-enabled XUL file of this test suite

accessible/tests/mochitest/Makefile.in

@@ -95,7 +95,7 @@ _TEST_FILES =\
 		test_nsOuterDocAccessible.html \
 		test_textattrs.html \
 		test_textboxes.html \
-		$(warning test_textboxes.xul temporarily disabled) \
+		test_textboxes.xul \
 		testTextboxes.js \
 		test_bug429285.html \
 		test_bug434464.html \