base::Bind: Convert Socket::Read.

net/socket/socket.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NET_SOCKET_SOCKET_H_
 #define NET_SOCKET_SOCKET_H_
 #pragma once
 
 #include "net/base/completion_callback.h"
 #include "net/base/net_export.h"
@@ skipping 13 matching lines @@
   // connected.  Zero is returned once to indicate end-of-file; the return value
   // of subsequent calls is undefined, and may be OS dependent.  ERR_IO_PENDING
   // is returned if the operation could not be completed synchronously, in which
   // case the result will be passed to the callback when available. If the
   // operation is not completed immediately, the socket acquires a reference to
   // the provided buffer until the callback is invoked or the socket is
   // closed.  If the socket is Disconnected before the read completes, the
   // callback will not be invoked.
   virtual int Read(IOBuffer* buf, int buf_len,
                    OldCompletionCallback* callback) = 0;
+  virtual int Read(IOBuffer* buf, int buf_len,
+                   const CompletionCallback& callback) = 0;
 
   // Writes data, up to |buf_len| bytes, to the socket.  Note: data may be
   // written partially.  The number of bytes written is returned, or an error
   // is returned upon failure.  ERR_SOCKET_NOT_CONNECTED should be returned if
   // the socket is not currently connected.  The return value when the
   // connection is closed is undefined, and may be OS dependent.  ERR_IO_PENDING
   // is returned if the operation could not be completed synchronously, in which
   // case the result will be passed to the callback when available.  If the
   // operation is not completed immediately, the socket acquires a reference to
   // the provided buffer until the callback is invoked or the socket is
@@ skipping 10 matching lines @@
 
   // Set the send buffer size (in bytes) for the socket.
   // Note: changing this value can affect the TCP window size on some platforms.
   // Returns true on success, or false on failure.
   virtual bool SetSendBufferSize(int32 size) = 0;
 };
 
 }  // namespace net
 
 #endif  // NET_SOCKET_SOCKET_H_