New OutputStream interface

tests/standalone/src/EchoServerStreamTest.dart

 // Copyright (c) 2011, 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.
 //
 // Echo server test program to test socket streams.
 //
 // VMOptions=
 // VMOptions=--short_socket_read
 // VMOptions=--short_socket_write
 // VMOptions=--short_socket_read --short_socket_write
@@ skipping 74 matching lines @@
             }
           }
         }
 
         if (_messages % 2 == 0) data = new List<int>(MSGSIZE);
         inputStream.dataHandler = dataReceived;
       }
 
       _socket.setCloseHandler(closeHandler);
       _socket.setErrorHandler(errorHandler);
-      bool written = stream.write(_buffer, 0, MSGSIZE, dataSent);
-      if (written) {
-        dataSent();
-      }
+      stream.write(_buffer);
+      dataSent();
     }
 
     _socket = new Socket(EchoServer.HOST, _port);
     if (_socket !== null) {
       _socket.setConnectHandler(connectHandler);
     } else {
       Expect.fail("socket creation failed");
     }
   }
 
@@ skipping 33 matching lines @@
 
       void dataReceived() {
         SocketOutputStream outputStream = _client.outputStream;
         int bytesRead = inputStream.readInto(buffer, offset, MSGSIZE - offset);
         if (bytesRead > 0) {
           offset += bytesRead;
           for (int i = 0; i < offset; i++) {
             Expect.equals(EchoServerGame.FIRSTCHAR + i, buffer[i]);
           }
           if (offset == MSGSIZE) {
-            outputStream.write(buffer, 0, buffer.length, null);
+            outputStream.write(buffer);
           }
         }
       }
 
       void closeHandler() {
         _client.close();
       }
 
       void errorHandler() {
         print("Socket error");
@@ skipping 25 matching lines @@
       }
     });
   }
 
   ServerSocket _server;
 }
 
 main() {
   EchoServerStreamTest.testMain();
 }