Removed IllegalAccessException and UnsupportedOperationException.

utils/tests/pub/test_pub.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.
 
 /**
  * Test infrastructure for testing pub. Unlike typical unit tests, most pub
  * tests are integration tests that stage some stuff on the file system, run
  * pub, and then validate the results. This library provides an API to build
  * tests like that.
  */
@@ skipping 1098 matching lines @@
   }
 
   /**
    * Validates that the `.tar.gz` file at [path] contains the expected contents.
    */
   Future validate(String path) {
     throw "TODO(nweiz): implement this";
   }
 
   Future delete(dir) {
-    throw new UnsupportedOperationException('');
+    throw new UnsupportedError('');
   }
 
   /**
    * Loads the contents of this tar file.
    */
   InputStream load(List<String> path) {
     if (!path.isEmpty()) {
       var joinedPath = Strings.join(path, '/');
       throw "Can't load $joinedPath from within $name: not a directory.";
     }
@@ skipping 71 matching lines @@
 }
 
 /**
  * Schedules a callback to be called after Pub is run with [runPub], even if it
  * fails.
  */
 void _scheduleCleanup(_ScheduledEvent event) {
   if (_scheduledCleanup == null) _scheduledCleanup = [];
   _scheduledCleanup.add(event);
 }