Update utils to new library syntax.

utils/tests/css/selector_literal_test.dart

 // Copyright (c) 2011, 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.
 
-#library("selector_literal_tests");
-#import("../../css/css.dart");
+library selector_literal_tests;
+import '../../css/css.dart';
 
 final String ERROR = 'CompilerException: <buffer>:';
 
 main() {
   initCssWorld();
   options.useColors = false;
 
   testSimpleClassSelectorSuccesses();
   testSimpleClassSelectorFailures();
   testPrivateNameFailures();
@@ skipping 209 matching lines @@
   // Too many element IDs.
   css = '@{#_privateId1 #_privateId2}';
   try {
     cssParseAndValidate('${css}', cssWorld);
     Expect.fail("${css} should not succeed.");
   } catch (e) {
     Expect.equals("CssSelectorException: Use of Id selector must be " +
         "singleton starting at #_privateId2", e.toString());
   }
 }