Reference count ProxyService....

net/http/http_network_layer.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_HTTP_HTTP_NETWORK_LAYER_H_
 #define NET_HTTP_HTTP_NETWORK_LAYER_H_
 
 #include "base/ref_counted.h"
 #include "base/scoped_ptr.h"
 #include "net/http/http_transaction_factory.h"
@@ skipping 33 matching lines @@
   virtual HttpTransaction* CreateTransaction();
   virtual HttpCache* GetCache();
   virtual void Suspend(bool suspend);
 
   HttpNetworkSession* GetSession();
 
  private:
   // The factory we will use to create network sockets.
   ClientSocketFactory* socket_factory_;
 
-  // The host resolver being used for the session.
+  // The host resolver and proxy service that will used when lazily
+  // creating |session_|.
   scoped_refptr<HostResolver> host_resolver_;
-
-  // The proxy service being used for the session.
-  ProxyService* proxy_service_;
+  scoped_refptr<ProxyService> proxy_service_;
 
   scoped_refptr<HttpNetworkSession> session_;
   bool suspended_;
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_NETWORK_LAYER_H_