make ProxyService::CreateSystemProxyConfigService return scoped_ptrs NOT FOR REVIEW

chrome/browser/net/proxy_service_factory.h

Index: chrome/browser/net/proxy_service_factory.h
diff --git a/chrome/browser/net/proxy_service_factory.h b/chrome/browser/net/proxy_service_factory.h
index b91c2e36e6fa8a8780b2b13041ceb4c02040fa96..c8f624fb6cc54d46e83cc301b32aa842f7b646a4 100644
--- a/chrome/browser/net/proxy_service_factory.h
+++ b/chrome/browser/net/proxy_service_factory.h
@@ -6,6 +6,7 @@
 #define CHROME_BROWSER_NET_PROXY_SERVICE_FACTORY_H_
 
 #include "base/basictypes.h"
+#include "base/memory/scoped_ptr.h"
 
 class PrefProxyConfigTracker;
 class PrefService;
@@ -48,7 +49,7 @@ class ProxyServiceFactory {
       net::NetLog* net_log,
       net::URLRequestContext* context,
       net::NetworkDelegate* network_delegate,
-      net::ProxyConfigService* proxy_config_service,
+      scoped_ptr<net::ProxyConfigService> proxy_config_service,
       const base::CommandLine& command_line,
       bool quick_check_enabled);