Remove .writeStream, .consume and rewrite IOSink to correctly implement a (sane) well-defined behav…

sdk/lib/io/socket.dart

 // Copyright (c) 2013, 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.
 
 part of dart.io;
 
 /**
  * The RawServerSocket is a server socket, providing a stream of low-level
  * [RawSocket]s.
  *
@@ skipping 194 matching lines @@
    * Returns [true] if the option was set successfully, false otherwise.
    */
   bool setOption(SocketOption option, bool enabled);
 }
 
 /**
  * A high-level class for communicating over a TCP socket. The [Socket] exposes
  * both a [Stream] and a [IOSink] interface, making it ideal for
  * using together with other [Stream]s.
  */
-abstract class Socket implements Stream<List<int>>,
-                                 IOSink<Socket> {
+abstract class Socket implements Stream<List<int>>, IOSink {
   /**
    * Creats a new socket connection to the host and port and returns a [Future]
    * that will complete with either a [Socket] once connected or an error
    * if the host-lookup or connection failed.
    */
   external static Future<Socket> connect(String host, int port);
 
   /**
    * Destroy the socket in both directions. Calling [destroy] will make the
    * send a close event on the stream and will no longer react on data being
@@ skipping 30 matching lines @@
         sb.write(" ($osError)");
       }
     } else if (osError != null) {
       sb.write(": $osError");
     }
     return sb.toString();
   }
   final String message;
   final OSError osError;
 }