Change IllegalArgumentException to ArgumentError.

tests/language/list_test.dart

 // Copyright (c) 2011, 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.
 // Dart test program for testing arrays.
 
 class ListTest {
   static void TestIterator() {
     List<int> a = new List<int>(10);
     int count = 0;
 
@@ skipping 75 matching lines @@
     Expect.equals(true, t.contains(9));
     Expect.equals(true, t.contains(-4));
     Expect.equals(false, t.contains(-3));
     Expect.equals(6, unsorted.length);
     Expect.equals(5, t.length);
     TestIterator();
     int element = unsorted[2];
     Expect.equals(9, element);
 
     Expect.throws(() => unsorted[2.1],
-                  (e) => e is IllegalArgumentException || e is TypeError);
+                  (e) => e is ArgumentError || e is TypeError);
 
     Expect.throws(() => new List(-1), (e) => true);
     Expect.throws(() => new List(99999999999999999999999), (e) => true);
 
     List list = new List();
     // We cannot write just 'list.removeLast' due to issue 3769.
     Expect.throws(() => list.removeLast(),
                   (e) => e is IndexOutOfRangeException);
     Expect.equals(0, list.length);
   }
 }
 
 main() {
   ListTest.testMain();
 }