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

net/spdy/spdy_proxy_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/spdy/spdy_proxy_client_socket.h"
 
 #include <algorithm>  // min
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 219 matching lines @@
 
   DCHECK(spdy_stream_.get());
   spdy_stream_->SendData(buf, buf_len, MORE_DATA_TO_SEND);
   net_log_.AddByteTransferEvent(NetLog::TYPE_SOCKET_BYTES_SENT,
                                 buf_len, buf->data());
   write_callback_ = callback;
   write_buffer_len_ = buf_len;
   return ERR_IO_PENDING;
 }
 
-bool SpdyProxyClientSocket::SetReceiveBufferSize(int32 size) {
+int SpdyProxyClientSocket::SetReceiveBufferSize(int32 size) {
   // Since this StreamSocket sits on top of a shared SpdySession, it
-  // is not safe for callers to set change this underlying socket.
-  return false;
+  // is not safe for callers to change this underlying socket.
+  return ERR_NOT_IMPLEMENTED;
 }
 
-bool SpdyProxyClientSocket::SetSendBufferSize(int32 size) {
+int SpdyProxyClientSocket::SetSendBufferSize(int32 size) {
   // Since this StreamSocket sits on top of a shared SpdySession, it
-  // is not safe for callers to set change this underlying socket.
-  return false;
+  // is not safe for callers to change this underlying socket.
+  return ERR_NOT_IMPLEMENTED;
 }
 
 int SpdyProxyClientSocket::GetPeerAddress(IPEndPoint* address) const {
   if (!IsConnected())
     return ERR_SOCKET_NOT_CONNECTED;
   return spdy_stream_->GetPeerAddress(address);
 }
 
 int SpdyProxyClientSocket::GetLocalAddress(IPEndPoint* address) const {
   if (!IsConnected())
@@ skipping 251 matching lines @@
   } else if (!read_callback_.is_null()) {
     // If we have a read_callback_, the we need to make sure we call it back.
     OnDataReceived(scoped_ptr<SpdyBuffer>());
   }
   // This may have been deleted by read_callback_, so check first.
   if (weak_ptr.get() && !write_callback.is_null())
     write_callback.Run(ERR_CONNECTION_CLOSED);
 }
 
 }  // namespace net