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

net/socket/socks_client_socket.cc

 // 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.
 
 #include "net/socket/socks_client_socket.h"
 
 #include "base/basictypes.h"
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/compiler_specific.h"
@@ skipping 193 matching lines @@
 
   int rv = transport_->socket()->Write(
       buf, buf_len,
       base::Bind(&SOCKSClientSocket::OnReadWriteComplete,
                  base::Unretained(this), callback));
   if (rv > 0)
     was_ever_used_ = true;
   return rv;
 }
 
-bool SOCKSClientSocket::SetReceiveBufferSize(int32 size) {
+int SOCKSClientSocket::SetReceiveBufferSize(int32 size) {
   return transport_->socket()->SetReceiveBufferSize(size);
 }
 
-bool SOCKSClientSocket::SetSendBufferSize(int32 size) {
+int SOCKSClientSocket::SetSendBufferSize(int32 size) {
   return transport_->socket()->SetSendBufferSize(size);
 }
 
 void SOCKSClientSocket::DoCallback(int result) {
   DCHECK_NE(ERR_IO_PENDING, result);
   DCHECK(!user_callback_.is_null());
 
   // Since Run() may result in Read being called,
   // clear user_callback_ up front.
   DVLOG(1) << "Finished setting up SOCKS handshake";
@@ skipping 217 matching lines @@
 
 int SOCKSClientSocket::GetPeerAddress(IPEndPoint* address) const {
   return transport_->socket()->GetPeerAddress(address);
 }
 
 int SOCKSClientSocket::GetLocalAddress(IPEndPoint* address) const {
   return transport_->socket()->GetLocalAddress(address);
 }
 
 }  // namespace net