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

chrome/browser/chromeos/policy/login_profile_policy_provider.cc

 // 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.
 
 #include "chrome/browser/chromeos/policy/login_profile_policy_provider.h"
 
 #include <memory>
 #include <string>
 #include <utility>
 
@@ skipping 44 matching lines @@
 
 // Applies the value of |device_policy| in |device_policy_map| as the
 // recommended value of |user_policy| in |user_policy_map|. If the value of
 // |device_policy| is unset, does nothing.
 void ApplyDevicePolicyAsRecommendedPolicy(const std::string& device_policy,
                                           const std::string& user_policy,
                                           const PolicyMap& device_policy_map,
                                           PolicyMap* user_policy_map) {
   const base::Value* value = device_policy_map.GetValue(device_policy);
   if (value) {
-    user_policy_map->Set(user_policy,
-                         POLICY_LEVEL_RECOMMENDED,
-                         POLICY_SCOPE_USER,
-                         POLICY_SOURCE_CLOUD,
-                         value->DeepCopy(),
-                         NULL);
+    user_policy_map->Set(user_policy, POLICY_LEVEL_RECOMMENDED,
+                         POLICY_SCOPE_USER, POLICY_SOURCE_CLOUD,
+                         value->CreateDeepCopy(), nullptr);
   }
 }
 
 // Applies |value| as the mandatory value of |user_policy| in |user_policy_map|.
 // If |value| is NULL, does nothing.
 void ApplyValueAsMandatoryPolicy(const base::Value* value,
                                  const std::string& user_policy,
                                  PolicyMap* user_policy_map) {
   if (value) {
-    user_policy_map->Set(user_policy,
-                         POLICY_LEVEL_MANDATORY,
-                         POLICY_SCOPE_USER,
-                         POLICY_SOURCE_CLOUD,
-                         value->DeepCopy(),
-                         NULL);
+    user_policy_map->Set(user_policy, POLICY_LEVEL_MANDATORY, POLICY_SCOPE_USER,
+                         POLICY_SOURCE_CLOUD, value->CreateDeepCopy(), nullptr);
   }
 }
 
 }  // namespace
 
 LoginProfilePolicyProvider::LoginProfilePolicyProvider(
     PolicyService* device_policy_service)
     : device_policy_service_(device_policy_service),
       waiting_for_device_policy_refresh_(false),
       weak_factory_(this) {
@@ skipping 104 matching lines @@
       ApplyValueAsMandatoryPolicy(policy_value.get(),
                                   key::kPowerManagementIdleSettings,
                                   &user_policy_map);
     }
   }
 
   UpdatePolicy(std::move(bundle));
 }
 
 }  // namespace policy