Revert toString output changes of Queues, and LinkedLists.

sdk/lib/_collection_dev/iterable.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.
 
 part of dart._collection.dev;
 
 
 // This is a hack to make @deprecated work in dart:io. Don't remove or use this,
 // unless coordinated with either me or the core library team. Thanks!
 // TODO(ajohnsen): Remove at the 11th of August 2013.
@@ skipping 879 matching lines @@
       }
     }
     return buffer.toString();
   }
 
   static String toStringIterable(Iterable iterable, String leftDelimiter,
                                  String rightDelimiter) {
     for (int i = 0; i < _toStringList.length; i++) {
       if (identical(_toStringList[i], iterable)) {
         return '$leftDelimiter...$rightDelimiter';
-        }
+      }
     }
 
     StringBuffer result = new StringBuffer();
     try {
       _toStringList.add(iterable);
       result.write(leftDelimiter);
       result.writeAll(iterable, ', ');
       result.write(rightDelimiter);
     } finally {
       assert(identical(_toStringList.last, iterable));
@@ skipping 183 matching lines @@
 
   static Set setDifference(Set set, Set other, Set result) {
     for (var element in set) {
       if (!other.contains(element)) {
         result.add(element);
       }
     }
     return result;
   }
 }