Remove insertRange.

sdk/lib/io/http_impl.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.io;
 
 class _HttpIncoming extends Stream<List<int>> {
   final int _transferLength;
   final Completer _dataCompleter = new Completer();
   Stream<List<int>> _stream;
@@ skipping 933 matching lines @@
   }
 
   static List<int> _chunkHeader(int length) {
     const hexDigits = const [0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
                              0x38, 0x39, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46];
     var header = [];
     if (length == 0) {
       header.add(hexDigits[length]);
     } else {
       while (length > 0) {
-        header.insertRange(0, 1, hexDigits[length % 16]);
+        header.insert(0, hexDigits[length % 16]);
         length = length >> 4;
       }
     }
     header.add(_CharCode.CR);
     header.add(_CharCode.LF);
     return header;
   }
 
   // Footer is just a CRLF.
   static List<int> get _chunkFooter => const [_CharCode.CR, _CharCode.LF];
@@ skipping 1021 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;
 }