Revert 113699 - base::Bind: Convert Socket::Write.

net/curvecp/messenger.h

Index: net/curvecp/messenger.h
===================================================================
--- net/curvecp/messenger.h	(revision 113718)
+++ net/curvecp/messenger.h	(working copy)
@@ -36,7 +36,6 @@
   int Read(IOBuffer* buf, int buf_len, OldCompletionCallback* callback);
   int Read(IOBuffer* buf, int buf_len, const CompletionCallback& callback);
   int Write(IOBuffer* buf, int buf_len, OldCompletionCallback* callback);
-  int Write(IOBuffer* buf, int buf_len, const CompletionCallback& callback);
 
   // Packetizer::Listener implementation.
   virtual void OnConnection(ConnectionKey key) OVERRIDE;
@@ -72,8 +71,7 @@
   // The send_buffer is a list of pending data to pack into messages and send
   // to the remote.
   CircularBuffer send_buffer_;
-  OldCompletionCallback* old_send_complete_callback_;
-  CompletionCallback send_complete_callback_;
+  OldCompletionCallback* send_complete_callback_;
   scoped_refptr<IOBuffer> pending_send_;
   int pending_send_length_;