Make first and last getters.

runtime/bin/http_impl.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.
 
 class _HttpHeaders implements HttpHeaders {
   _HttpHeaders() : _headers = new Map<String, List<String>>();
 
   List<String> operator[](String name) {
     name = name.toLowerCase();
     return _headers[name];
@@ skipping 2276 matching lines @@
     // If there is currently no eviction timer start one.
     if (_evictionTimer == null) {
       void _handleEviction(Timer timer) {
         Date now = new Date.now();
         List<String> emptyKeys = new List<String>();
         _openSockets.forEach(
             void _(String key, Queue<_SocketConnection> connections) {
               // As returned connections are added at the head of the
               // list remove from the tail.
               while (!connections.isEmpty) {
-                _SocketConnection socketConn = connections.last();
+                _SocketConnection socketConn = connections.last;
                 if (socketConn._idleTime(now).inMilliseconds >
                     DEFAULT_EVICTION_TIMEOUT) {
                   connections.removeLast();
                   socketConn._socket.close();
                   if (connections.isEmpty) emptyKeys.add(key);
                 } else {
                   break;
                 }
               }
             });
@@ skipping 38 matching lines @@
 
 
 class _RedirectInfo implements RedirectInfo {
   const _RedirectInfo(int this.statusCode,
                       String this.method,
                       Uri this.location);
   final int statusCode;
   final String method;
   final Uri location;
 }