Add optional and named parameters to FunctionType.

tests/compiler/dart2js/type_checker_test.dart

Index: tests/compiler/dart2js/type_checker_test.dart
diff --git a/tests/compiler/dart2js/type_checker_test.dart b/tests/compiler/dart2js/type_checker_test.dart
index 85dcbd8c52a45629a864ad3f5fcb0f8b7b603bb7..46c638976f4462c16f7e8cc45d4ffbe9bc562e34 100644
--- a/tests/compiler/dart2js/type_checker_test.dart
+++ b/tests/compiler/dart2js/type_checker_test.dart
@@ -360,8 +360,12 @@ testFunctionSubtyping() {
   bool isSubtype(List<DartType> in1, DartType out1, List<DartType> in2,
                  DartType out2) {
     return compiler.types.isSubtype(
-        new FunctionType(out1, new Link<DartType>.fromList(in1), null),
-        new FunctionType(out2, new Link<DartType>.fromList(in2), null));
+        new FunctionType(null, out1, new Link<DartType>.fromList(in1),
+                         const Link<DartType>(),
+                         const Link<SourceString>(), const Link<DartType>()),
+        new FunctionType(null, out2, new Link<DartType>.fromList(in2),
+                         const Link<DartType>(),
+                         const Link<SourceString>(), const Link<DartType>()));
   }
   Expect.isTrue(isSubtype([], intType, [], intType));
   Expect.isTrue(isSubtype([], intType, [], objectType));