Adds a new error for cases where a firewall may be the issue.

net/socket/tcp_client_socket_libevent.cc

 // Copyright (c) 2010 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/tcp_client_socket_libevent.h"
 
 #include <errno.h>
 #include <fcntl.h>
 #include <netdb.h>
 #include <sys/socket.h>
@@ skipping 68 matching lines @@
       return OK;
     default:
       LOG(WARNING) << "Unknown error " << os_error
                    << " mapped to net::ERR_FAILED";
       return ERR_FAILED;
   }
 }
 
 int MapConnectError(int os_error) {
   switch (os_error) {
+    case EACCES:
+      return ERR_NETWORK_ACCESS_DENIED;
     case ETIMEDOUT:
       return ERR_CONNECTION_TIMED_OUT;
     default: {
       int net_error = MapPosixError(os_error);
       if (net_error == ERR_FAILED)
         return ERR_CONNECTION_FAILED;  // More specific than ERR_FAILED.
 
       // Give a more specific error when the user is offline.
       if (net_error == ERR_ADDRESS_UNREACHABLE &&
           NetworkChangeNotifier::IsOffline()) {
@@ skipping 448 matching lines @@
 
 void TCPClientSocketLibevent::SetOmniboxSpeculation() {
   use_history_.set_omnibox_speculation();
 }
 
 bool TCPClientSocketLibevent::WasEverUsed() const {
   return use_history_.was_used_to_convey_data();
 }
 
 }  // namespace net