DCHECK -> CHECK for UDPSocket Read/Write calls when previouse in progress.

net/udp/udp_socket_win.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_socket_win.h"
 
 #include <mstcpip.h>
 
 #include "base/callback.h"
 #include "base/lazy_instance.h"
@@ skipping 327 matching lines @@
                        const CompletionCallback& callback) {
   return RecvFrom(buf, buf_len, NULL, callback);
 }
 
 int UDPSocketWin::RecvFrom(IOBuffer* buf,
                            int buf_len,
                            IPEndPoint* address,
                            const CompletionCallback& callback) {
   DCHECK(CalledOnValidThread());
   DCHECK_NE(INVALID_SOCKET, socket_);
-  DCHECK(read_callback_.is_null());
+  CHECK(read_callback_.is_null());
   DCHECK(!recv_from_address_);
   DCHECK(!callback.is_null());  // Synchronous operation not supported.
   DCHECK_GT(buf_len, 0);
 
   int nread = InternalRecvFrom(buf, buf_len, address);
   if (nread != ERR_IO_PENDING)
     return nread;
 
   read_callback_ = callback;
   recv_from_address_ = address;
@@ skipping 12 matching lines @@
                          const CompletionCallback& callback) {
   return SendToOrWrite(buf, buf_len, &address, callback);
 }
 
 int UDPSocketWin::SendToOrWrite(IOBuffer* buf,
                                 int buf_len,
                                 const IPEndPoint* address,
                                 const CompletionCallback& callback) {
   DCHECK(CalledOnValidThread());
   DCHECK_NE(INVALID_SOCKET, socket_);
-  DCHECK(write_callback_.is_null());
+  CHECK(write_callback_.is_null());
   DCHECK(!callback.is_null());  // Synchronous operation not supported.
   DCHECK_GT(buf_len, 0);
   DCHECK(!send_to_address_.get());
 
   int nwrite = InternalSendTo(buf, buf_len, address);
   if (nwrite != ERR_IO_PENDING)
     return nwrite;
 
   if (address)
     send_to_address_.reset(new IPEndPoint(*address));
@@ skipping 613 matching lines @@
               NULL);
 
   return OK;
 }
 
 void UDPSocketWin::DetachFromThread() {
   base::NonThreadSafe::DetachFromThread();
 }
 
 }  // namespace net