make SetReceiveBufferSize and SetSendBufferSize return net error codes (instead of bools)

net/socket/socks5_client_socket.h

 // Copyright (c) 2012 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_SOCKS5_CLIENT_SOCKET_H_
 #define NET_SOCKET_SOCKS5_CLIENT_SOCKET_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 46 matching lines @@
   virtual bool GetSSLInfo(SSLInfo* ssl_info) OVERRIDE;
 
   // Socket implementation.
   virtual int Read(IOBuffer* buf,
                    int buf_len,
                    const CompletionCallback& callback) OVERRIDE;
   virtual int Write(IOBuffer* buf,
                     int buf_len,
                     const CompletionCallback& callback) OVERRIDE;
 
-  virtual bool SetReceiveBufferSize(int32 size) OVERRIDE;
-  virtual bool SetSendBufferSize(int32 size) OVERRIDE;
+  virtual int SetReceiveBufferSize(int32 size) OVERRIDE;
+  virtual int SetSendBufferSize(int32 size) OVERRIDE;
 
   virtual int GetPeerAddress(IPEndPoint* address) const OVERRIDE;
   virtual int GetLocalAddress(IPEndPoint* address) const OVERRIDE;
 
  private:
   enum State {
     STATE_GREET_WRITE,
     STATE_GREET_WRITE_COMPLETE,
     STATE_GREET_READ,
     STATE_GREET_READ_COMPLETE,
@@ skipping 70 matching lines @@
   HostResolver::RequestInfo host_request_info_;
 
   BoundNetLog net_log_;
 
   DISALLOW_COPY_AND_ASSIGN(SOCKS5ClientSocket);
 };
 
 }  // namespace net
 
 #endif  // NET_SOCKET_SOCKS5_CLIENT_SOCKET_H_