Remove unused class DirectoryTestSuite from test script.

tools/testing/dart/test_suite.dart

 // Copyright (c) 2012, 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.
 
 /**
  * Classes and methods for enumerating and preparing tests.
  *
  * This library includes:
  *
  * - Creating tests by listing all the Dart files in certain directories,
@@ skipping 223 matching lines @@
    *             example3_tests.dart
    *
    * The important parts:
    *
    * * The leaf directory name is the name of your test suite.
    * * The status file uses the same name.
    * * Test files are directly in that directory and end in "_tests.dart".
    *
    * If you follow that convention, then you can construct one of these like:
    *
-   *     new DirectoryTestSuite(configuration, 'path/to/mytestsuite');
+   * new StandardTestSuite.forDirectory(configuration, 'path/to/mytestsuite');
    *
    * instead of having to create a custom [StandardTestSuite] subclass. In
    * particular, if you add 'path/to/mytestsuite' to [TEST_SUITE_DIRECTORIES]
    * in test.dart, this will all be set up for you.
    */
   factory StandardTestSuite.forDirectory(
       Map configuration, String directory) {
     final name = directory.substring(directory.lastIndexOf('/') + 1);
 
     return new StandardTestSuite(configuration,
@@ skipping 672 matching lines @@
 
     List<String> otherScripts = new List<String>();
     matches = otherScriptsRegExp.allMatches(contents);
     for (var match in matches) {
       otherScripts.addAll(match[1].split(' ').filter((e) => e != ''));
     }
 
     if (contents.contains("@compile-error")) {
       isNegative = true;
     }
-    
+
     if (contents.contains("@runtime-error") && hasRuntime) {
       isNegative = true;
     }
 
     bool isMultitest = multiTestRegExp.hasMatch(contents);
     bool containsLeadingHash = leadingHashRegExp.hasMatch(contents);
     Match isolateMatch = isolateStubsRegExp.firstMatch(contents);
     String isolateStubs = isolateMatch != null ? isolateMatch[1] : '';
     bool containsDomImport = domImportRegExp.hasMatch(contents);
     bool isLibraryDefinition = libraryDefinitionRegExp.hasMatch(contents);
@@ skipping 67 matching lines @@
         dir.onDone = (ignore) => activityCompleted();
         dir.list(recursive: listRecursively());
       }
     }
     // Completed the enqueueing of listers.
     activityCompleted();
   }
 }
 
 
-/**
- * A standard test suite whose file organization matches an expected structure.
- * To use this, your suite should look like:
- *
- *     dart/
- *       path/
- *         to/
- *           mytestsuite/
- *             mytestsuite.status
- *             example1_tests.dart
- *             example2_tests.dart
- *             example3_tests.dart
- *
- * The important parts:
- *
- * * The leaf directory name is the name of your test suite.
- * * The status file uses the same name.
- * * Test files are directly in that directory and end in "_tests.dart".
- *
- * If you follow that convention, then you can construct one of these like:
- *
- *     new DirectoryTestSuite(configuration, 'path/to/mytestsuite');
- *
- * instead of having to create a custom [StandardTestSuite] subclass. In
- * particular, if you add 'path/to/mytestsuite' to [TEST_SUITE_DIRECTORIES] in
- * test.dart, this will all be set up for you.
- */
-class DirectoryTestSuite extends StandardTestSuite {
-  factory DirectoryTestSuite(Map configuration, String directory) {
-    final name = directory.substring(directory.lastIndexOf('/') + 1);
-    print(name);
-
-    return new DirectoryTestSuite._internal(configuration,
-      name, directory, ['$directory/$name.status']);
-  }
-
-  DirectoryTestSuite._internal(Map configuration,
-                               String suiteName,
-                               String directoryPath,
-                               List<String> statusFilePaths)
-    : super(configuration, suiteName, directoryPath, statusFilePaths);
-
-  bool isTestFile(String filename) => filename.endsWith('_tests.dart');
-}
-
-
 class JUnitTestSuite implements TestSuite {
   Map configuration;
   String suiteName;
   String directoryPath;
   String statusFilePath;
   final String dartDir;
   String buildDir;
   String classPath;
   List<String> testClasses;
   Function doTest;
@@ skipping 302 matching lines @@
  * $noCrash tests are expected to be flaky but not crash
  * $pass tests are expected to pass
  * $failOk tests are expected to fail that we won't fix
  * $fail tests are expected to fail that we should fix
  * $crash tests are expected to crash that we should fix
  * $timeout tests are allowed to timeout
 """;
     print(report);
    }
 }