Remove deprecated Strings class.

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 832 matching lines @@
 
     final String compiler = configuration['compiler'];
     final String runtime = configuration['runtime'];
 
     for (var vmOptions in getVmOptions(optionsFromFile)) {
       // Create a unique temporary directory for each set of vmOptions.
       // TODO(dart:429): Replace separate replaceAlls with a RegExp when
       // replaceAll(RegExp, String) is implemented.
       String optionsName = '';
       if (getVmOptions(optionsFromFile).length > 1) {
-          optionsName = Strings.join(vmOptions, '-').replaceAll('-','')
-                                                    .replaceAll('=','')
-                                                    .replaceAll('/','');
+          optionsName = vmOptions.join('-').replaceAll('-','')
+                                           .replaceAll('=','')
+                                           .replaceAll('/','');
       }
       final String tempDir = createOutputDirectory(info.filePath, optionsName);
 
       String dartWrapperFilename = '$tempDir/test.dart';
       String compiledDartWrapperFilename = '$tempDir/test.js';
 
       String htmlPath = '$tempDir/test.html';
       if (isWrappingRequired && !isWebTest) {
         // test.dart will import the dart test directly, if it is a library,
         // or indirectly through test_as_library.dart, if it is not.
@@ skipping 760 matching lines @@
                         updatedConfiguration,
                         completeHandler,
                         new Set<String>.from([PASS])));
     doDone();
   }
 
   void completeHandler(TestCase testCase) {
   }
 
   void computeClassPath() {
-    classPath = Strings.join(
+    classPath =
         ['$buildDir/analyzer/util/analyzer/dart_analyzer.jar',
          '$buildDir/analyzer/dart_analyzer_tests.jar',
          // Third party libraries.
          '$dartDir/third_party/args4j/2.0.12/args4j-2.0.12.jar',
          '$dartDir/third_party/guava/r09/guava-r09.jar',
          '$dartDir/third_party/rhino/1_7R3/js.jar',
          '$dartDir/third_party/hamcrest/v1_3/hamcrest-core-1.3.0RC2.jar',
          '$dartDir/third_party/hamcrest/v1_3/hamcrest-generator-1.3.0RC2.jar',
          '$dartDir/third_party/hamcrest/v1_3/hamcrest-integration-1.3.0RC2.jar',
          '$dartDir/third_party/hamcrest/v1_3/hamcrest-library-1.3.0RC2.jar',
-         '$dartDir/third_party/junit/v4_8_2/junit.jar'],
-        Platform.operatingSystem == 'windows'? ';': ':');  // Path separator.
+         '$dartDir/third_party/junit/v4_8_2/junit.jar']
+        .join(Platform.operatingSystem == 'windows'? ';': ':');  // Path separator.
   }
 }
 
 class LastModifiedCache {
   Map<String, Date> _cache = <String, Date>{};
 
   /**
    * Returns the last modified date of the given [uri].
    *
    * The return value will be cached for future queries. If [uri] is a local
@@ skipping 251 matching lines @@
  * $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
  * $compileErrorSkip tests are skipped on browsers due to compile-time error
 """;
     print(report);
    }
 }