Big merge from experimental to bleeding edge.

tests/standalone/io/http_read_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
 
 import "dart:isolate";
@@ skipping 164 matching lines @@
           request.contentLength = data.length;
           request.outputStream.write(data.charCodes);
         }
         request.outputStream.close();
       };
       conn.onResponse = (HttpClientResponse response) {
         Expect.equals(HttpStatus.OK, response.statusCode);
         InputStream stream = response.inputStream;
         List<int> body = new List<int>();
         stream.onData = () {
-          List tmp = new List(3);
+          List tmp = new List.fixedLength(3);
           int bytes = stream.readInto(tmp);
           body.addAll(tmp.getRange(0, bytes));
         };
         stream.onClosed = () {
           Expect.equals(data, new String.fromCharCodes(body));
           count++;
           if (count < kMessageCount) {
             sendRequest();
           } else {
             httpClient.shutdown();
@@ skipping 65 matching lines @@
   }
   testServerMain.start();
 }
 
 void main() {
   testReadInto(true);
   testReadInto(false);
   testReadShort(true);
   testReadShort(false);
 }