Update range errors to agree on the numbers.

runtime/lib/typed_data.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.
 
 // patch classes for Int8List ..... Float64List and ByteData implementations.
 
 import "dart:_internal";
 import 'dart:math' show Random;
 
 patch class Int8List {
@@ skipping 459 matching lines @@
 
   List toList({bool growable: true}) {
     return new List.from(this, growable: growable);
   }
 
   Set toSet() {
     return new Set.from(this);
   }
 
   List sublist(int start, [int end]) {
-    if (end == null) end = this.length;
+    end = RangeError.checkValidRange(start, end, this.length);
     var length = end - start;
-    _rangeCheck(this.length, start, length);
     List result = _createList(length);
     result.setRange(0, length, this, start);
     return result;
   }
 
   void setRange(int start, int end, Iterable from, [int skipCount = 0]) {
     // Check ranges.
     if (0 > start || start > end || end > length) {
       RangeError.checkValidRange(start, end, length);  // Always throws.
       assert(false);
@@ skipping 3116 matching lines @@
   }
 }
 
 
 int _defaultIfNull(object, value) {
   if (object == null) {
     return value;
   }
   return object;
 }