Use std::unique_ptr to express ownership of base::Value in PolicyMap::Entry

chrome/browser/extensions/extension_management_test_util.cc

 // Copyright 2014 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/extensions/extension_management_test_util.h"
 
 #include <string>
 #include <utility>
 
 #include "components/crx_file/id_util.h"
@@ skipping 243 matching lines @@
                                              std::string()))
           .GetValue(policy::key::kExtensionSettings);
   const base::DictionaryValue* dict_value = nullptr;
   if (policy_value && policy_value->GetAsDictionary(&dict_value))
     SetPref(dict_value->DeepCopy());
   else
     SetPref(new base::DictionaryValue);
 }
 
 ExtensionManagementPolicyUpdater::~ExtensionManagementPolicyUpdater() {
-  policies_->Get(policy::PolicyNamespace(policy::POLICY_DOMAIN_CHROME,
-                                         std::string()))
+  policies_
+      ->Get(
+          policy::PolicyNamespace(policy::POLICY_DOMAIN_CHROME, std::string()))
       .Set(policy::key::kExtensionSettings, policy::POLICY_LEVEL_MANDATORY,
-           policy::POLICY_SCOPE_USER, policy::POLICY_SOURCE_CLOUD,
-           TakePref().release(), nullptr);
+           policy::POLICY_SCOPE_USER, policy::POLICY_SOURCE_CLOUD, TakePref(),
+           nullptr);
   provider_->UpdatePolicy(std::move(policies_));
 }
 
 }  // namespace extensions