kernel -> ssa: implement literal lists

tests/compiler/dart2js/kernel/literals_test.dart

+// Copyright (c) 2016, 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:test/test.dart';
+
+import 'helper.dart' show check;
+
+main() {
+  test('compile function that returns a literal list', () {
+    return check('main() { return [1, 2, 3]; }');
+  });
+  test('compile function that returns a const list', () {
+    return check('main() { return const [1, 2, 3]; }');
+  });
+}