Upgrade Iterable and Iterator.

tool/input_sdk/private/string_helper.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.
 
 part of dart._js_helper;
 
 int stringIndexOfStringUnchecked(receiver, other, startIndex) {
   return JS('int', '#.indexOf(#, #)', receiver, other, startIndex);
 }
 
@@ skipping 36 matching lines @@
   final int start;
   final String input;
   final String pattern;
 }
 
 Iterable<Match> allMatchesInStringUnchecked(String pattern, String string,
                                             int startIndex) {
   return new _StringAllMatchesIterable(string, pattern, startIndex);
 }
 
-class _StringAllMatchesIterable extends IterableBase<Match> {
+class _StringAllMatchesIterable extends Iterable<Match> {
   final String _input;
   final String _pattern;
   final int _index;
 
   _StringAllMatchesIterable(this._input, this._pattern, this._index);
 
   Iterator<Match> get iterator =>
       new _StringAllMatchesIterator(_input, _pattern, _index);
 
   Match get first {
@@ skipping 224 matching lines @@
 String stringJoinUnchecked(array, separator) {
   return JS('String', r'#.join(#)', array, separator);
 }
 
 String stringReplaceRangeUnchecked(String receiver,
     int start, int end, String replacement) {
   var prefix = JS('String', '#.substring(0, #)', receiver, start);
   var suffix = JS('String', '#.substring(#)', receiver, end);
   return "$prefix$replacement$suffix";
 }