make ProxyService::CreateSystemProxyConfigService return scoped_ptrs NOT FOR REVIEW

net/proxy/proxy_service_v8.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_PROXY_PROXY_SERVICE_V8_H_
 #define NET_PROXY_PROXY_SERVICE_V8_H_
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "net/base/net_export.h"
@@ skipping 21 matching lines @@
 // |host_resolver| points to the host resolving dependency the PAC script
 // should use for any DNS queries. It must remain valid throughout the
 // lifetime of the ProxyService.
 //
 // ##########################################################################
 // # See the warnings in net/proxy/proxy_resolver_v8.h describing the
 // # multi-threading model. In order for this to be safe to use, *ALL* the
 // # other V8's running in the process must use v8::Locker.
 // ##########################################################################
 NET_EXPORT scoped_ptr<ProxyService> CreateProxyServiceUsingV8ProxyResolver(
-    ProxyConfigService* proxy_config_service,
+    scoped_ptr<ProxyConfigService> proxy_config_service,
     ProxyScriptFetcher* proxy_script_fetcher,
     DhcpProxyScriptFetcher* dhcp_proxy_script_fetcher,
     HostResolver* host_resolver,
     NetLog* net_log,
     NetworkDelegate* network_delegate);
 
 }  // namespace net
 
 #endif  // NET_PROXY_PROXY_SERVICE_V8_H_