Convert JsonWriter::Write to taking a const ref for the in-param

net/tools/net_watcher/net_watcher.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.
 
 // This is a small utility that watches for and logs network changes.
 
 #include <string>
 
 #include "base/at_exit.h"
 #include "base/basictypes.h"
@@ skipping 53 matching lines @@
     case net::NetworkChangeNotifier::CONNECTION_BLUETOOTH:
       return "CONNECTION_BLUETOOTH";
     default:
       return "CONNECTION_UNEXPECTED";
   }
 }
 
 std::string ProxyConfigToString(const net::ProxyConfig& config) {
   scoped_ptr<base::Value> config_value(config.ToValue());
   std::string str;
-  base::JSONWriter::Write(config_value.get(), &str);
+  base::JSONWriter::Write(*config_value, &str);
   return str;
 }
 
 const char* ConfigAvailabilityToString(
     net::ProxyConfigService::ConfigAvailability availability) {
   switch (availability) {
     case net::ProxyConfigService::CONFIG_PENDING:
       return "CONFIG_PENDING";
     case net::ProxyConfigService::CONFIG_VALID:
       return "CONFIG_VALID";
@@ skipping 134 matching lines @@
   proxy_config_service->RemoveObserver(&net_watcher);
 
   // Uses |network_change_notifier|.
   net::NetworkChangeNotifier::RemoveDNSObserver(&net_watcher);
   net::NetworkChangeNotifier::RemoveConnectionTypeObserver(&net_watcher);
   net::NetworkChangeNotifier::RemoveIPAddressObserver(&net_watcher);
   net::NetworkChangeNotifier::RemoveNetworkChangeObserver(&net_watcher);
 
   return 0;
 }