Fix warnings detected by the analyzer.

sdk/lib/collection_dev/list.dart

 // Copyright (c) 2013, 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;
 
 /**
  * Class implementing the read-operations on [List].
  *
  * Implements all read-only operations, except [:operator[]:] and [:length:],
@@ skipping 88 matching lines @@
 
   List<E> take(int n) {
     return new ListView(this, 0, n);
   }
 
   List<E> skip(int n) {
     return new ListView(this, n, null);
   }
 
   String toString() => ToString.collectionToString(this);
+
+  List<E> get reversed {
+    return new ReversedListView(this, 0, null);
+  }
 }
 
 /**
  * Abstract class implementing the non-length changing operations of [List].
  */
 abstract class FixedLengthListBase<E> extends ListBase<E> {
   void operator[]=(int index, E value);
 
-  List<E> get reversed => new ReversedListView<E>(this, 0, null);
-
   void sort([Comparator<E> compare]) {
     Sort.sort(this, compare);
   }
 
   void setRange(int start, int length, List<E> from, [int startFrom]) {
     if (length < 0) throw new ArgumentError("length: $length");
     if (startFrom == null) startFrom = 0;
     for (int i = 0; i < length; i++) {
       this[start + i] = from[startFrom + i];
     }
@@ skipping 395 matching lines @@
   E _current;
 
   ReverseListIterator(List<E> list, int start, int end)
       : _list = list,
         _start = start,
         _index = end,
         _originalLength = list.length;
 
   bool moveNext() {
     if (_list.length != _originalLength) {
-      throw new ConcurrentModificationError(list);
+      throw new ConcurrentModificationError(_list);
     }
     if (_index <= _start) return false;
     _index -= 1;
     _current = _list[_index];
     return true;
   }
 
   E get current => _current;
 }