Use unique_ptr<DictionaryValue> in ProxyConfigDictionary

chrome/browser/extensions/api/proxy/proxy_api_helpers.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.
 
 // Implementation of helper functions for the Chrome Extensions Proxy Settings
 // API.
 //
 // Throughout this code, we report errors to the user by setting an |error|
 // parameter, if and only if these errors can be cause by invalid input
 // from the extension and we cannot expect that the extensions API has
@@ skipping 289 matching lines @@
   const base::ListValue* bypass_list = NULL;
   if (!proxy_rules->GetList(keys::kProxyConfigBypassList, &bypass_list)) {
     LOG(ERROR) << "'rules.bypassList' could not be parsed.";
     *bad_message = true;
     return false;
   }
 
   return JoinUrlList(bypass_list, ",", out, error, bad_message);
 }
 
-base::DictionaryValue* CreateProxyConfigDict(
+std::unique_ptr<base::DictionaryValue> CreateProxyConfigDict(
     ProxyPrefs::ProxyMode mode_enum,
     bool pac_mandatory,
     const std::string& pac_url,
     const std::string& pac_data,
     const std::string& proxy_rules_string,
     const std::string& bypass_list,
     std::string* error) {
-  base::DictionaryValue* result_proxy_config = NULL;
+  std::unique_ptr<base::DictionaryValue> result_proxy_config;
   switch (mode_enum) {
     case ProxyPrefs::MODE_DIRECT:
       result_proxy_config = ProxyConfigDictionary::CreateDirect();
       break;
     case ProxyPrefs::MODE_AUTO_DETECT:
       result_proxy_config = ProxyConfigDictionary::CreateAutoDetect();
       break;
     case ProxyPrefs::MODE_PAC_SCRIPT: {
       std::string url;
       if (!pac_url.empty()) {
@@ skipping 165 matching lines @@
                                 const std::string& delims) {
   base::ListValue* out = new base::ListValue;
   base::StringTokenizer entries(in, delims);
   while (entries.GetNext())
     out->AppendString(entries.token());
   return out;
 }
 
 }  // namespace proxy_api_helpers
 }  // namespace extensions