Simplify tests under utils/tests to follow StandardTestSuite convention.

utils/tests/css/selector_literal_tests.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.
 
-#import("../../../css/css.dart");
+#import("../../css/css.dart");
 
 class SelectorLiteralTest {
   static final String ERROR = 'CompilerException: <buffer>:';
 
   static testMain() {
     initCssWorld();
     options.useColors = false;
 
     testSimpleClassSelectorSuccesses();
     testSimpleClassSelectorFailures();
@@ skipping 113 matching lines @@
     // Namespace selector not valid in @{css_expression}
     css = '@{foo|div}';
     try {
       cssParseAndValidate('${css}', cssWorld);
       Expect.fail("${css} should not succeed.");
     } catch (final e) {
       Expect.equals("CssSelectorException: Invalid template selector foo|div",
           e.toString());
     }
 
-    // class and element id not allowed together. 
+    // class and element id not allowed together.
     css = '@{.foobar foo|div}';
     try {
       cssParseAndValidate('${css}', cssWorld);
       Expect.fail("$css} should not succeed.");
     } catch (final e) {
       Expect.equals("CssSelectorException: Invalid template selector foo|div",
           e.toString());
     }
 
-    // Element id and namespace not allowed together. 
+    // Element id and namespace not allowed together.
     css = '@{#id1 foo|div}';
     try {
       cssParseAndValidate('${css}', cssWorld);
       Expect.fail("${css} should not succeed.");
     } catch (final e) {
       Expect.equals("CssSelectorException: Invalid template selector foo|div",
           e.toString());
     }
 
-    // namespace and element id not allowed together. 
+    // namespace and element id not allowed together.
     css = '@{foo|div #id1}';
     try {
       cssParseAndValidate('${css}', cssWorld);
       Expect.fail("${css} should not succeed.");
     } catch (final e) {
       Expect.equals("CssSelectorException: Invalid template selector foo|div",
           e.toString());
     }
 
     // namespace / element not allowed.
@@ skipping 62 matching lines @@
       Expect.equals("CssSelectorException: Use of Id selector must be " +
           "singleton starting at #_privateId2", e.toString());
     }
   }
 
 }
 
 main() {
   SelectorLiteralTest.testMain();
 }