Add IE support.

lib/src/executable.dart

 // Copyright (c) 2015, 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.
 
 // TODO(nweiz): This is under lib so that it can be used by the unittest dummy
 // package. Once that package is no longer being updated, move this back into
 // bin.
 library test.executable;
 
 import 'dart:async';
@@ skipping 59 matching lines @@
     if (transformer is String) return transformer == 'test/pub_serve';
     if (transformer is! Map) return false;
     if (transformer.keys.length != 1) return false;
     return transformer.keys.single == 'test/pub_serve';
   });
 }
 
 void main(List<String> args) {
   var allPlatforms = TestPlatform.all.toList();
   if (!Platform.isMacOS) allPlatforms.remove(TestPlatform.safari);
+  if (!Platform.isWindows) allPlatforms.remove(TestPlatform.internetExplorer);
 
   _parser.addFlag("help", abbr: "h", negatable: false,
       help: "Shows this usage information.");
   _parser.addFlag("version", negatable: false,
       help: "Shows the package's version.");
   _parser.addOption("package-root", hide: true);
   _parser.addOption("name",
       abbr: 'n',
       help: 'A substring of the name of the test to run.\n'
           'Regular expression syntax is supported.');
@@ skipping 269 matching lines @@
       if (description is! Map) return false;
       var path = description["path"];
       if (path is! String) return false;
 
       print("$version (from $path)");
       return true;
 
     default: return false;
   }
 }