Migrated test block 13 to Dart 2.0.

tests/corelib_strong/list_first_test.dart

Index: tests/corelib_strong/list_first_test.dart
diff --git a/tests/corelib_strong/list_first_test.dart b/tests/corelib_strong/list_first_test.dart
deleted file mode 100644
index 74be9812878727cc9af31296e7e8dbc2d3adfced..0000000000000000000000000000000000000000
--- a/tests/corelib_strong/list_first_test.dart
+++ /dev/null
@@ -1,20 +0,0 @@
-// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-import "package:expect/expect.dart";
-
-void test(List list) {
-  if (list.isEmpty) {
-    Expect.throws(() => list.first, (e) => e is StateError);
-  } else {
-    Expect.equals(list[0], list.first);
-  }
-}
-
-main() {
-  test([1, 2, 3]);
-  test(const ["foo", "bar"]);
-  test([]);
-  test(const []);
-}