Implement the PAC js-binding for "myIpAddress()".

net/base/net_util.h

 // Copyright (c) 2006-2008 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.
 
 #ifndef NET_BASE_NET_UTIL_H__
 #define NET_BASE_NET_UTIL_H__
 
 #include "build/build_config.h"
 
 #include <string>
@@ skipping 40 matching lines @@
                     std::string* host,
                     int* port);
 bool GetHostAndPort(const std::string& host_and_port,
                     std::string* host,
                     int* port);
 
 // Returns the string representation of an address, like "192.168.0.1".
 // Returns empty string on failure.
 std::string NetAddressToString(const struct addrinfo* net_address);
 
+// Returns the hostname of the current system. Returns empty string on failure.
+std::string GetMyHostName();
+
 // Return the value of the HTTP response header with name 'name'.  'headers'
 // should be in the format that URLRequest::GetResponseHeaders() returns.
 // Returns the empty string if the header is not found.
 std::wstring GetSpecificHeader(const std::wstring& headers,
                                const std::wstring& name);
 std::string GetSpecificHeader(const std::string& headers,
                               const std::string& name);
 
 // Return the value of the HTTP response header field's parameter named
 // 'param_name'.  Returns the empty string if the parameter is not found or is
@@ skipping 84 matching lines @@
 // restricted.
 bool IsPortAllowedByFtp(int port);
 
 // Set socket to non-blocking mode
 int SetNonBlocking(int fd);
 
 }  // namespace net
 
 #endif  // NET_BASE_NET_UTIL_H__