Move base::FreeDeleter into its own header.

net/dns/dns_config_service_win.h

 // 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.
 
 #ifndef NET_DNS_DNS_CONFIG_SERVICE_WIN_H_
 #define NET_DNS_DNS_CONFIG_SERVICE_WIN_H_
 
 // The sole purpose of dns_config_service_win.h is for unittests so we just
 // include these headers here.
 #include <winsock2.h>
 #include <iphlpapi.h>
 
 #include <string>
 #include <vector>
 
 #include "base/macros.h"
+#include "base/memory/free_deleter.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/string16.h"
 #include "net/base/net_export.h"
 #include "net/dns/dns_config_service.h"
 
 // The general effort of DnsConfigServiceWin is to configure |nameservers| and
 // |search| in DnsConfig. The settings are stored in the Windows registry, but
 // to simplify the task we use the IP Helper API wherever possible. That API
 // yields the complete and ordered |nameservers|, but to determine |search| we
@@ skipping 114 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(DnsConfigServiceWin);
 };
 
 }  // namespace internal
 
 }  // namespace net
 
 #endif  // NET_DNS_DNS_CONFIG_SERVICE_WIN_H_