Revert "Delete app jit or aot snapshots as each test is completed to reduce the amount of disk spac…

tools/testing/dart/test_runner.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 executing tests.
  *
  * This module includes:
  * - Managing parallel execution of tests, including timeout checks.
  * - Evaluating the output of each test as pass/fail/crash/timeout.
@@ skipping 507 matching lines @@
     builder.addJson(_sourceDirectory);
     builder.addJson(_destinationDirectory);
   }
 
   bool _equal(CleanDirectoryCopyCommand other) =>
       super._equal(other) &&
       _sourceDirectory == other._sourceDirectory &&
       _destinationDirectory == other._destinationDirectory;
 }
 
-class DeleteCommand extends ScriptCommand {
-  final String _filename;
-
-  DeleteCommand._(this._filename) : super._('delete');
-
-  String get reproductionCommand =>
-      "Deleting $_filename";
-
-  Future<ScriptCommandOutputImpl> run() {
-    var watch = new Stopwatch()..start();
-
-    var file = new io.File(_filename);
-
-    return file.delete(recursive: true).then((io.File file) {
-      return new ScriptCommandOutputImpl(
-          this, Expectation.PASS, "", watch.elapsed);
-    }).catchError((error) {
-      return new ScriptCommandOutputImpl(
-          this, Expectation.FAIL, "An error occured: $error.", watch.elapsed);
-    });
-  }
-
-  void _buildHashCode(HashCodeBuilder builder) {
-    super._buildHashCode(builder);
-    builder.addJson(_filename);
-  }
-
-  bool _equal(DeleteCommand other) =>
-      super._equal(other) &&
-      _filename == other._filename;
-}
-
 class ModifyPubspecYamlCommand extends ScriptCommand {
   String _pubspecYamlFile;
   String _destinationFile;
   Map<String, Map> _dependencyOverrides;
 
   ModifyPubspecYamlCommand._(
       this._pubspecYamlFile, this._destinationFile, this._dependencyOverrides)
       : super._("modify_pubspec") {
     assert(_pubspecYamlFile.endsWith("pubspec.yaml"));
     assert(_destinationFile.endsWith("pubspec.yaml"));
@@ skipping 243 matching lines @@
         displayName, executable, arguments, environment, workingDirectory);
     return _getUniqueCommand(command);
   }
 
   Command getCopyCommand(String sourceDirectory, String destinationDirectory) {
     var command =
         new CleanDirectoryCopyCommand._(sourceDirectory, destinationDirectory);
     return _getUniqueCommand(command);
   }
 
-  Command getDeleteCommand(String filename) {
-    var command = new DeleteCommand._(filename);
-    return _getUniqueCommand(command);
-  }
-
   Command getPubCommand(String pubCommand, String pubExecutable,
       String pubspecYamlDirectory, String pubCacheDirectory) {
     var command = new PubCommand._(
         pubCommand, pubExecutable, pubspecYamlDirectory, pubCacheDirectory);
     return _getUniqueCommand(command);
   }
 
   Command getMakeSymlinkCommand(String link, String target) {
     return _getUniqueCommand(new MakeSymlinkCommand._(link, target));
   }
@@ skipping 2540 matching lines @@
     }
   }
 
   void eventAllTestsDone() {
     for (var listener in _eventListener) {
       listener.allDone();
     }
     _allDone();
   }
 }