Move base::FreeDeleter into its own header.

net/dns/dns_config_service_win_unittest.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/dns/dns_config_service_win.h"
 
 #include "base/logging.h"
+#include "base/memory/free_deleter.h"
 #include "base/win/windows_version.h"
 #include "net/base/ip_address.h"
 #include "net/dns/dns_protocol.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace net {
 
 namespace {
 
 TEST(DnsConfigServiceWinTest, ParseSearchList) {
@@ skipping 425 matching lines @@
     EXPECT_EQ(t.unhandled_options, config.unhandled_options);
     EXPECT_EQ(t.have_nrpt, config.use_local_ipv6);
   }
 }
 
 
 }  // namespace
 
 }  // namespace net