test.py: Use different path to dartanalyzer on windows

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 1174 matching lines @@
     }
     for (var excludedEnvironmentVariable in EXCLUDED_ENVIRONMENT_VARIABLES) {
       environment.remove(excludedEnvironmentVariable);
     }
 
     return environment;
   }
 }
 
 class BatchRunnerProcess {
+  static bool isWindows = io.Platform.operatingSystem == 'windows';
+
   final batchRunnerTypes = {
       'selenium' : {
           'run_executable' : 'python',
           'run_arguments' : ['tools/testing/run_selenium.py', '--batch'],
           'terminate_command' : ['--terminate'],
       },
       'dartanalyzer' : {
-        'run_executable' : 'sdk/bin/dartanalyzer_developer', // $suffix
+        'run_executable' :
+           isWindows ?
+             'sdk\\bin\\dartanalyzer_developer.bat'
+              : 'sdk/bin/dartanalyzer_developer',
         'run_arguments' : ['--batch'],
         'terminate_command' : null,
       },
       'dart2analyzer' : {
+        // This is a unix shell script, no windows equivalent available
         'run_executable' : 'editor/tools/analyzer_experimental',
         'run_arguments' : ['--batch'],
         'terminate_command' : null,
     },
   };
 
   Completer<CommandOutput> _completer;
   Command _command;
   List<String> _arguments;
   String _runnerType;
@@ skipping 850 matching lines @@
     }
   }
 
   void eventAllTestsDone() {
     for (var listener in _eventListener) {
       listener.allDone();
     }
     _allDone();
   }
 }