Make first and last getters.

tests/language/generic_creation_test.dart

Index: tests/language/generic_creation_test.dart
diff --git a/tests/language/generic_creation_test.dart b/tests/language/generic_creation_test.dart
index 8aa6d29f61ab139430f1c196e2225aec55d5945b..ad71e2c20f41a225093579d95baf5388f1d7133b 100644
--- a/tests/language/generic_creation_test.dart
+++ b/tests/language/generic_creation_test.dart
@@ -5,8 +5,8 @@
 class A<X, Y, Z> {
   shift() => new A<Z, X, Y>();
   swap() => new A<Z, Y, X>();
-  first() => new A<X, X, X>();
-  last() => new A<Z, Z, Z>();
+  get first => new A<X, X, X>();
+  get last => new A<Z, Z, Z>();
   wrap() => new A<A<X, X, X>, A<Y, Y, Y>, A<Z, Z, Z>>();
 }
 
@@ -20,7 +20,7 @@ main() {
   A a = new A<U, V, W>();
   sameType(new A<W, U, V>(), a.shift());
   sameType(new A<W, V, U>(), a.swap());
-  sameType(new A<U, U, U>(), a.first());
-  sameType(new A<W, W, W>(), a.last());
+  sameType(new A<U, U, U>(), a.first);
+  sameType(new A<W, W, W>(), a.last);
   sameType(new A<A<U, U, U>, A<V, V, V>, A<W, W, W>>(), a.wrap());
 }