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

tests/standalone/io/stream_pipe_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.
 //
 // VMOptions=
 // VMOptions=--short_socket_read
 // VMOptions=--short_socket_write
 // VMOptions=--short_socket_read --short_socket_write
 library ServerTest;
 
@@ skipping 16 matching lines @@
   var length1 = file1.lengthSync();
   var length2 = file2.lengthSync();
   if (file1Offset == 0 && file2Offset == 0 && count == null) {
     if (length1 != length2) {
       file1.closeSync();
       file2.closeSync();
       return false;
     }
   }
   if (count == null) count = length1;
-  var data1 = new List<int>.fixedLength(count);
-  var data2 = new List<int>.fixedLength(count);
+  var data1 = new List<int>(count);
+  var data2 = new List<int>(count);
   if (file1Offset != 0) file1.setPositionSync(file1Offset);
   if (file2Offset != 0) file2.setPositionSync(file2Offset);
   var read1 = file1.readListSync(data1, 0, count);
   Expect.equals(count, read1);
   var read2 = file2.readListSync(data2, 0, count);
   Expect.equals(count, read2);
   for (var i = 0; i < count; i++) {
     if (data1[i] != data2[i]) {
       file1.closeSync();
       file2.closeSync();
@@ skipping 56 matching lines @@
     output.done.then((_) {
       var src = srcFile.openSync();
       var dst = dstFile.openSync();
       var srcLength = src.lengthSync();
       var dstLength = dst.lengthSync();
       Expect.equals(srcLength + 1, dstLength);
       Expect.isTrue(compareFileContent(srcFileName,
                                        dstFileName,
                                        count: srcLength));
       dst.setPositionSync(srcLength);
-      var data = new List<int>.fixedLength(1);
+      var data = new List<int>(1);
       var read2 = dst.readListSync(data, 0, 1);
       Expect.equals(32, data[0]);
       src.closeSync();
       dst.closeSync();
       dstFile.deleteSync();
       tempDir.deleteSync();
       donePort.toSendPort().send(null);
     });
   });
 }
@@ skipping 42 matching lines @@
     });
   });
 }
 
 
 main() {
   testFileToFilePipe1();
   testFileToFilePipe2();
   testFileToFilePipe3();
 }