Allow runtime tests to run on Windows.

tools/testing/dart/status_file_parser.dart

 // Copyright (c) 2011, 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("status_file_parser");
 
 
 #import("status_expression.dart");
 
 // Possible outcomes of running a test.
@@ skipping 162 matching lines @@
    * part is removed from the last filename component. Then the last
    * component is split into more components at '_'s.
    *
    * Examples of complext filename component splits:
    *
    * a/b/c/d_e_f/d_e_f_A01_t01 -> ['a', 'b', 'c', 'd_e_f', 'A01', 't01']
    * a/b/c/d_e_f_A01_t01 -> ['a', 'b', 'c', 'd', 'e', 'f', 'A01', 't01']
    */
   Set<String> expectations(String filename) {
     var result = new Set();
-    var splitFilename = filename.split(new Platform().pathSeparator());
+    var splitFilename = filename.split('/');
 
     // If complex matching is required split the last filename
     // component at '_'. Additionally, remove the prefix of the last
     // component if it is identical to the second-to-last component.
     if (_complexMatching && splitFilename.length >= 2) {
       var last = splitFilename.removeLast();
       var secondToLast = splitFilename.last();
       if (last.startsWith(secondToLast)) {
         last = last.substring(secondToLast.length);
       }
@@ skipping 49 matching lines @@
         }
         regExps[i] = regExp;
       }
       _keyToRegExps[key] = regExps;
     });
 
     _regExpCache = null;
     _preprocessed = true;
   }
 }