Use unique_ptr<DictionaryValue> in ProxyConfigDictionary

chromeos/network/proxy/ui_proxy_config.h

 // Copyright 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.
 
 #ifndef CHROMEOS_NETWORK_PROXY_UI_PROXY_CONFIG_H_
 #define CHROMEOS_NETWORK_PROXY_UI_PROXY_CONFIG_H_
 
+#include <memory>
 #include <string>
 
 #include "chromeos/chromeos_export.h"
 #include "components/proxy_config/proxy_prefs.h"
 #include "net/proxy/proxy_bypass_rules.h"
 #include "net/proxy/proxy_server.h"
 #include "url/gurl.h"
 
 namespace base {
 class DictionaryValue;
@@ skipping 49 matching lines @@
                          const net::ProxyServer& server);
 
   // Only valid for MODE_SINGLE_PROXY or MODE_PROXY_PER_SCHEME.
   void SetBypassRules(const net::ProxyBypassRules& rules);
 
   // Converts net::ProxyConfig to |this|.
   bool FromNetProxyConfig(const net::ProxyConfig& net_config);
 
   // Converts |this| to Dictionary of ProxyConfigDictionary format (which
   // is the same format used by prefs).
-  base::DictionaryValue* ToPrefProxyConfig() const;
+  std::unique_ptr<base::DictionaryValue> ToPrefProxyConfig() const;
 
   // Map |scheme| (one of "http", "https", "ftp" or "socks") to the correct
   // ManualProxy.  Returns NULL if scheme is invalid.
   ManualProxy* MapSchemeToProxy(const std::string& scheme);
 
   Mode mode;
 
   ProxyPrefs::ConfigState state;
 
   // True if user can modify proxy settings via UI.
@@ skipping 15 matching lines @@
   // Set if mode is MODE_PROXY_PER_SCHEME and has socks proxy.
   ManualProxy socks_proxy;
 
   // Exceptions for when not to use a proxy.
   net::ProxyBypassRules bypass_rules;
 };
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_NETWORK_PROXY_UI_PROXY_CONFIG_H_