Update comments in core lib showing proper factory syntax.

corelib/src/implementation/queue.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.
 
 
 /**
  * An entry in a doubly linked list. It contains a pointer to the next
  * entry, the previous entry, and the boxed element.
  */
 class DoubleLinkedQueueEntry<E> {
@@ skipping 84 matching lines @@
  * Implementation of a double linked list that box list elements into
  * DoubleLinkedQueueEntry objects.
  */
 class DoubleLinkedQueue<E> implements Queue<E> {
   _DoubleLinkedQueueEntrySentinel<E> _sentinel;
 
   DoubleLinkedQueue() {
     _sentinel = new _DoubleLinkedQueueEntrySentinel<E>();
   }
 
-  // See bug 5257789.
-  factory DoubleLinkedQueue/* <E> */.from(Iterable/* <E> */ other) {
-    Queue/* <E> */ list = new DoubleLinkedQueue();
+  // See issue 417. Works in the vm, fails in dartc and frog.
+  factory DoubleLinkedQueue/*<E>*/.from(Iterable/*<E>*/ other) {
+    Queue/*<E>*/ list = new DoubleLinkedQueue();
     for (final e in other) {
       list.addLast(e);
     }
     return list;
   }
 
   void addLast(E value) {
     _sentinel.prepend(value);
   }
 
@@ skipping 117 matching lines @@
   }
 
   E next() {
     if (!hasNext()) {
       throw const NoMoreElementsException();
     }
     _currentEntry = _currentEntry._next;
     return _currentEntry.element;
   }
 }