dart2js: Don't emit static const fields since they are inlined where they are used

tests/compiler/dart2js/emit_const_fields_test.dart

+// 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.
+// Test that unused static consts are not emitted.
+
+import 'compiler_helper.dart';
+import 'parser_helper.dart';

[ngeoffray, 2013/01/29 11:19:38]

Do you need parser_helper?

[erikcorry, 2013/02/04 11:38:01]

No.

Removed.

+
+const String TEST_GUIDE = r"""
+class Guide {
+  static const LTUAE = 42;
+  static const TITLE = 'Life, the Universe and Everything';
+}
+
+main() {
+  return "${Guide.LTUAE}, ${Guide.TITLE}";
+}
+""";
+
+main() {
+  String generated = compileAll(TEST_GUIDE);
+  Expect.isTrue(generated.contains("42"));
+  Expect.isFalse(generated.contains("TITLE"));
+}
+