Change new List(n) to return fixed length list.

pkg/fixnum/test/int_64_vm_test.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.
 
 // A test to compare the results of the fixnum library with the Dart VM
 
 library int64vmtest;
 import 'dart:math' as math;
 
 part '../lib/src/int32.dart';
@@ skipping 156 matching lines @@
 
     for (int a = 0; a < 19; a++) {
       // Math.pow(10, a)
       int pow = 1;
       for (int j = 0; j < a; j++) {
         pow *= 10;
       }
       testSet.add(new int64.fromInt(pow));
     }
 
-    TEST_VALUES = new List<int64>.fixedLength(testSet.length);
+    TEST_VALUES = new List<int64>(testSet.length);
     int index = 0;
     for (int64 val in testSet) {
       TEST_VALUES[index++] = val;
     }
 
     print("VALUES.length = $index");
   }
 
   void _doTestUnary(UnaryOp op, int64 val) {
     int ref = op.ref(val.toInt());
@@ skipping 132 matching lines @@
       }
     }
     for (int i = 0; i < RANDOM_TESTS; i++) {
       int64 randomLong = _randomInt64();
       for (int shift = -64; shift <= 64; shift++) {
         _doTestShift(op, randomLong, shift);
       }
     }
   }
 }