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

chrome/browser/chromeos/policy/cloud_external_data_policy_observer_unittest.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/cloud_external_data_policy_observer.h"
 
 #include <utility>
 #include <vector>
 
 #include "base/files/file_path.h"
@@ skipping 334 matching lines @@
   content::NotificationService::current()->Notify(
       chrome::NOTIFICATION_LOGIN_USER_PROFILE_PREPARED,
       content::NotificationService::AllSources(),
       content::Details<Profile>(profile_.get()));
 }
 
 void CloudExternalDataPolicyObserverTest::SetRegularUserAvatarPolicy(
     const std::string& value) {
   PolicyMap policy_map;
   if (!value.empty()) {
-    policy_map.Set(
-        key::kUserAvatarImage,
-        POLICY_LEVEL_MANDATORY,
-        POLICY_SCOPE_USER,
-        POLICY_SOURCE_CLOUD,
-        new base::StringValue(value),
-        external_data_manager_.CreateExternalDataFetcher(
-            key::kUserAvatarImage).release());
+    policy_map.Set(key::kUserAvatarImage, POLICY_LEVEL_MANDATORY,
+                   POLICY_SCOPE_USER, POLICY_SOURCE_CLOUD,
+                   base::WrapUnique(new base::StringValue(value)),
+                   external_data_manager_.CreateExternalDataFetcher(
+                       key::kUserAvatarImage));
   }
   user_policy_provider_.UpdateChromePolicy(policy_map);
 }
 
 void CloudExternalDataPolicyObserverTest::LogInAsRegularUser() {
   user_manager_->AddUser(AccountId::FromUserEmail(kRegularUserID));
 
   PolicyServiceImpl::Providers providers;
   providers.push_back(&user_policy_provider_);
   TestingProfile::Builder builder;
@@ skipping 579 matching lines @@
 
   EXPECT_TRUE(set_calls_.empty());
   EXPECT_TRUE(cleared_calls_.empty());
   ASSERT_EQ(1u, fetched_calls_.size());
   EXPECT_EQ(kRegularUserID, fetched_calls_.front().first);
   EXPECT_EQ(avatar_policy_2_data_, fetched_calls_.front().second);
   ClearObservations();
 }
 
 }  // namespace policy