Renaming IndexOutOfRangeException to RangeError.

lib/utf/utf_core.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.
 
 /**
  * Provide a list of Unicode codepoints for a given string.
  */
 List<int> stringToCodepoints(String str) {
   List<int> codepoints;
   // TODO _is16BitCodeUnit() is used to work around a bug with dart2js
@@ skipping 201 matching lines @@
 class _ListRange implements Iterable {
   final List _source;
   final int _offset;
   final int _length;
 
   _ListRange(source, [offset = 0, length]) :
       this._source = source,
       this._offset = offset,
       this._length = (length == null ? source.length - offset : length) {
     if (_offset < 0 || _offset > _source.length) {
-      throw new IndexOutOfRangeException(_offset);
+      throw new RangeError(_offset);
     }
     if (_length != null && (_length < 0)) {
-      throw new IndexOutOfRangeException(_length);
+      throw new RangeError(_length);
     }
     if (_length + _offset > _source.length) {
-      throw new IndexOutOfRangeException(_length + _offset);
+      throw new RangeError(_length + _offset);
     }
   }
 
   _ListRangeIterator iterator() =>
       new _ListRangeIteratorImpl(_source, _offset, _offset + _length);
 
   int get length => _length;
 }
 
 /**
@@ skipping 27 matching lines @@
     _offset -= by;
   }
 
   int get remaining => _end - _offset;
 
   void skip([int count = 1]) {
     _offset += count;
   }
 }