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

chrome/browser/chromeos/net/proxy_config_handler.cc

 // Copyright (c) 2013 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 "chrome/browser/chromeos/net/proxy_config_handler.h"
 
 #include "base/bind.h"
 #include "base/json/json_writer.h"
 #include "base/logging.h"
 #include "base/prefs/pref_registry_simple.h"
@@ skipping 94 matching lines @@
     shill_service_client->ClearProperty(
         dbus::ObjectPath(network.path()),
         shill::kProxyConfigProperty,
         base::Bind(&NotifyNetworkStateHandler, network.path()),
         base::Bind(&network_handler::ShillErrorCallbackFunction,
                    "SetProxyConfig.ClearProperty Failed",
                    network.path(),
                    network_handler::ErrorCallback()));
   } else {
     std::string proxy_config_str;
-    base::JSONWriter::Write(&proxy_config.GetDictionary(), &proxy_config_str);
+    base::JSONWriter::Write(proxy_config.GetDictionary(), &proxy_config_str);
     shill_service_client->SetProperty(
         dbus::ObjectPath(network.path()),
         shill::kProxyConfigProperty,
         base::StringValue(proxy_config_str),
         base::Bind(&NotifyNetworkStateHandler, network.path()),
         base::Bind(&network_handler::ShillErrorCallbackFunction,
                    "SetProxyConfig.SetProperty Failed",
                    network.path(),
                    network_handler::ErrorCallback()));
   }
 }
 
 void RegisterPrefs(PrefRegistrySimple* registry) {
   registry->RegisterListPref(prefs::kDeviceOpenNetworkConfiguration);
 }
 
 void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry) {
   registry->RegisterBooleanPref(prefs::kUseSharedProxies, false);
 
   registry->RegisterListPref(prefs::kOpenNetworkConfiguration);
 }
 
 }  // namespace proxy_config
 
 }  // namespace chromeos