Use unique_ptr<DictionaryValue> in ProxyConfigDictionary

chromeos/network/proxy/proxy_config_service_impl.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.
 
 #include "chromeos/network/proxy/proxy_config_service_impl.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/callback.h"
 #include "base/location.h"
@@ skipping 175 matching lines @@
   ProxyPrefs::ConfigState pref_state =
       PrefProxyConfigTrackerImpl::ReadPrefConfig(profile_prefs,
                                                  &pref_proxy_config);
   if (PrefProxyConfigTrackerImpl::PrefPrecedes(pref_state)) {
     const PrefService::Preference* const pref =
         profile_prefs->FindPreference(::proxy_config::prefs::kProxy);
     const base::DictionaryValue* proxy_config_value;
     bool value_exists = pref->GetValue()->GetAsDictionary(&proxy_config_value);
     DCHECK(value_exists);
 
-    return base::MakeUnique<ProxyConfigDictionary>(proxy_config_value);
+    return base::MakeUnique<ProxyConfigDictionary>(
+        proxy_config_value->CreateDeepCopy());
   }
 
   const NetworkState* network =
       NetworkHandler::Get()->network_state_handler()->DefaultNetwork();
   // No connected network.
   if (!network)
     return nullptr;
 
   // Apply network proxy configuration.
   ::onc::ONCSource onc_source;
@@ skipping 78 matching lines @@
       std::unique_ptr<base::DictionaryValue> config_dict(
           effective_config.ToValue());
       VLOG(1) << this << ": Proxy changed: "
               << ProxyPrefs::ConfigStateToDebugString(active_config_state_)
               << ", " << *config_dict;
     }
   }
 }
 
 }  // namespace chromeos