Fix multitest failure/pass marking.

tools/testing/dart/multitest.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("multitest");
 
 // Multitests are Dart test scripts containing lines of the form
 // " [some dart code] /// [key]: [error type]"
 //
 // For each key in the file, a new test file is made containing all
@@ skipping 162 matching lines @@
   file.noPendingWriteHandler =() {
     file.close();
   };
   file.closeHandler = () {
     var outcome = outcomes[key];
     bool enableFatalTypeErrors = (supportsFatalTypeErrors &&
                                   outcome.contains('static type error'));
     bool isNegative = (outcome.contains('compile-time error') ||
                        outcome.contains('runtime error') ||
                        enableFatalTypeErrors);
-    bool isNegativeIfChecked = outcome.contains('type error');
+    bool isNegativeIfChecked = outcome.contains('dynamic type error');
     doTest(filename,
            isNegative,
            isNegativeIfChecked,
            enableFatalTypeErrors);
     WriteMultitestToFileAndQueueIt(tests,
                                    outcomes,
                                    supportsFatalTypeErrors,
                                    currentKey,
                                    basePath,
                                    doTest,
@@ skipping 11 matching lines @@
   var split = testDir.split(new Platform().pathSeparator());
   var lastComponent = split.removeLast();
   Expect.isTrue(lastComponent == 'src');
   String path = parent_dir.path + split.last();
   Directory dir = new Directory(path);
   if (!dir.existsSync()) {
     dir.createSync();
   }
   return path;
 }