Change List constructors.

tests/standalone/io/file_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.
 //
 // Dart test program for testing file I/O.
 
 import 'dart:async';
 import 'dart:io';
 import 'dart:isolate';
 
@@ skipping 551 matching lines @@
         openedFile.writeList(new MyListOfOneElement(262), 0, 1);
         x = 12345678901234567890123456789012345678901234567890;
         y = 12345678901234567890123456789012345678901234568153;
         openedFile.writeList([y - x], 0, 1).then((ignore) {
           openedFile.close().then((ignore) {
             // Check the written bytes.
             final File file2 = new File(fileName);
             var openedFile2 = file2.openSync();
             var length = openedFile2.lengthSync();
             Expect.equals(8, length);
-            List data = new List(length);
+            List data = new List.fixedLength(length);
             openedFile2.readListSync(data, 0, length);
             for (var i = 0; i < data.length; i++) {
               Expect.equals(i, data[i]);
             }
             openedFile2.closeSync();
             file2.deleteSync();
             asyncTestDone("testWriteVariousLists");
           });
         });
       });
@@ skipping 736 matching lines @@
       testDirectorySync();
       testWriteStringUtf8();
       testWriteStringUtf8Sync();
     });
   }
 }
 
 main() {
   FileTest.testMain();
 }