Migrated test block 27 to Dart 2.0.

tests/corelib/string_from_environment2_test.dart

Index: tests/corelib/string_from_environment2_test.dart
diff --git a/tests/corelib/string_from_environment2_test.dart b/tests/corelib/string_from_environment2_test.dart
deleted file mode 100644
index b6d81b816d7499b03d86c19ffb369382f3afe83f..0000000000000000000000000000000000000000
--- a/tests/corelib/string_from_environment2_test.dart
+++ /dev/null
@@ -1,12 +0,0 @@
-// Copyright (c) 2013, 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.
-// SharedOptions=-Da=a -Da=bb -Db=bb -Dc=ccc -Da=ccc -Db=ccc
-
-import "package:expect/expect.dart";
-
-main() {
-  Expect.equals('ccc', const String.fromEnvironment('a'));
-  Expect.equals('ccc', const String.fromEnvironment('b'));
-  Expect.equals('ccc', const String.fromEnvironment('c'));
-}