Big merge from experimental to bleeding edge.

tests/standalone/io/file_output_stream_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.
 // Testing file input stream, VM-only, standalone test.
 
 import "dart:io";
 import "dart:isolate";
 
 void testOpenOutputStreamSync() {
   Directory tempDirectory = new Directory('').createTempSync();
@@ skipping 37 matching lines @@
     file.create().then((ignore) {
       OutputStream stream = file.openOutputStream();
       final total = 100;
       var count = 0;
       stream.onNoPendingWrites = () {
         stream.write([count++]);
         if (count == total) {
           stream.close();
         }
         stream.onClosed = () {
-          List buffer = new List<int>(total);
+          List buffer = new List<int>.fixedLength(total);
           File fileSync = new File(fileName);
           var openedFile = fileSync.openSync();
           openedFile.readListSync(buffer, 0, total);
           for (var i = 0; i < total; i++) {
             Expect.equals(i, buffer[i]);
           }
           openedFile.closeSync();
           fileSync.deleteSync();
           done.toSendPort().send("done");
         };
@@ skipping 28 matching lines @@
   };
   x.close();
   x.onError = (e) => Expect.fail("No error expected");
 }
 
 main() {
   testOpenOutputStreamSync();
   testOutputStreamNoPendingWrite();
   testOutputStreamFlush();
 }