Use a direct include of the message_loop header in net/, part 2.

net/proxy/proxy_config_service_mac.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/proxy/proxy_config_service_mac.h"
 
 #include <CoreFoundation/CoreFoundation.h>
 #include <SystemConfiguration/SystemConfiguration.h>
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/mac/foundation_util.h"
 #include "base/mac/scoped_cftyperef.h"
-#include "base/message_loop.h"
+#include "base/message_loop/message_loop.h"
 #include "base/strings/sys_string_conversions.h"
 #include "net/base/net_errors.h"
 #include "net/proxy/proxy_config.h"
 #include "net/proxy/proxy_info.h"
 #include "net/proxy/proxy_server.h"
 
 namespace net {
 
 namespace {
 
@@ skipping 252 matching lines @@
   // Keep track of the last value we have seen.
   has_fetched_config_ = true;
   last_config_fetched_ = new_config;
 
   // Notify all the observers.
   FOR_EACH_OBSERVER(Observer, observers_,
                     OnProxyConfigChanged(new_config, CONFIG_VALID));
 }
 
 }  // namespace net