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

net/udp/udp_server_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/udp/udp_server_socket.h"
 
 #include "net/base/rand_callback.h"
 
 namespace net {
 
@@ skipping 19 matching lines @@
   return socket_.RecvFrom(buf, buf_len, address, callback);
 }
 
 int UDPServerSocket::SendTo(IOBuffer* buf,
                             int buf_len,
                             const IPEndPoint& address,
                             const CompletionCallback& callback) {
   return socket_.SendTo(buf, buf_len, address, callback);
 }
 
-bool UDPServerSocket::SetReceiveBufferSize(int32 size) {
+int UDPServerSocket::SetReceiveBufferSize(int32 size) {
   return socket_.SetReceiveBufferSize(size);
 }
 
-bool UDPServerSocket::SetSendBufferSize(int32 size) {
+int UDPServerSocket::SetSendBufferSize(int32 size) {
   return socket_.SetSendBufferSize(size);
 }
 
 void UDPServerSocket::Close() {
   socket_.Close();
 }
 
 int UDPServerSocket::GetPeerAddress(IPEndPoint* address) const {
   return socket_.GetPeerAddress(address);
 }
@@ skipping 36 matching lines @@
 
 int UDPServerSocket::SetDiffServCodePoint(DiffServCodePoint dscp) {
   return socket_.SetDiffServCodePoint(dscp);
 }
 
 void UDPServerSocket::DetachFromThread() {
   socket_.DetachFromThread();
 }
 
 }  // namespace net