[mojo-edk] Remove invalid DCHECK from early Mach port message processing

mojo/edk/system/node_channel.cc

 // Copyright 2016 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 "mojo/edk/system/node_channel.h"
 
 #include <cstring>
 #include <limits>
 #include <sstream>
 
@@ skipping 753 matching lines @@
     base::AutoLock lock(remote_process_handle_lock_);
     remote_process_handle = remote_process_handle_;
   }
   PendingMessageQueue pending_writes;
   PendingRelayMessageQueue pending_relays;
   {
     base::AutoLock lock(pending_mach_messages_lock_);
     pending_writes.swap(pending_write_messages_);
     pending_relays.swap(pending_relay_messages_);
   }
-  DCHECK(pending_writes.empty() && pending_relays.empty());
 
   while (!pending_writes.empty()) {
     Channel::MessagePtr message = std::move(pending_writes.front());
     pending_writes.pop();
     if (!relay->SendPortsToProcess(message.get(), remote_process_handle)) {
       LOG(ERROR) << "Error on sending mach ports. Remote process is likely "
                  << "gone. Dropping message.";
       return;
     }
 
@@ skipping 82 matching lines @@
 
   base::AutoLock lock(channel_lock_);
   if (!channel_)
     DLOG(ERROR) << "Dropping message on closed channel.";
   else
     channel_->Write(std::move(message));
 }
 
 }  // namespace edk
 }  // namespace mojo