Command class hieracy refactoring, environmentOverride extraction

dart/tools/testing/dart/record_and_replay.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.
 
 library record_and_replay;
 
 import 'dart:io';
 import 'dart:convert';
 
 import 'test_runner.dart';
@@ skipping 37 matching lines @@
 
 class TestCaseRecorder {
   Path _outputPath;
   List<Map> _recordedCommandInvocations = [];
   var _cwd;
 
   TestCaseRecorder(this._outputPath) {
     _cwd  = Directory.current.path;
   }
 
-  void nextCommand(Command command, int timeout) {
+  void nextCommand(ProcessCommand command, int timeout) {
     // Convert arguments from absolute to relative paths (relative to the dart
     // directory) because the absolute path on the machine where we record
     // may be different from the absolute path on the machine where we execute
     // the commands.
     var arguments = makePathsRelativeToDart(_cwd, command.arguments);
 
     var commandExecution = {
       'name' : command.displayName,
       'command' : {
         'timeout_limit' : timeout,
@@ skipping 24 matching lines @@
     var file = new File(recordingPath.toNativePath());
     var commandRecordings = JSON.decode(file.readAsStringSync());
     _commandOutputRecordings = {};
     for (var commandRecording in commandRecordings) {
       var key = _indexKey(commandRecording['command']['executable'],
                           commandRecording['command']['arguments'].join(' '));
       _commandOutputRecordings[key] = commandRecording['command_output'];
     }
   }
 
-  CommandOutput outputOf(Command command) {
+  CommandOutput outputOf(ProcessCommand command) {
     // Convert arguments from absolute to relative paths (relative to the dart
     // directory) because the absolute path on the machine where we record
     // may be different from the absolute path on the machine where we execute
     // the commands.
     var arguments = makePathsRelativeToDart(_cwd, command.arguments);
 
     var key = _indexKey(command.executable, arguments.join(' '));
     var command_output = _commandOutputRecordings[key];
     if (command_output == null) {
       print("Sorry, but there is no command output for ${command.displayName}"
@@ skipping 13 matching lines @@
         duration,
         false);
     return commandOutput;
   }
 
   String _indexKey(String executable, String arguments) {
     return "${executable}__$arguments";
   }
 }