Move TestingPrefService to use unique_ptr<Value>

chrome/browser/extensions/api/developer_private/developer_private_api_unittest.cc

 // Copyright 2015 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/api/developer_private/developer_private_api.h"
 
 #include <memory>
 #include <utility>
 
 #include "base/files/file_util.h"
@@ skipping 839 matching lines @@
   function = new api::DeveloperPrivateDeleteExtensionErrorsFunction();
   EXPECT_TRUE(RunFunction(function, *args)) << function->GetError();
   // No more errors!
   EXPECT_TRUE(error_console->GetErrorsForExtension(extension->id()).empty());
 }
 
 // Test developerPrivate.updateProfileConfiguration: Try to turn on devMode
 // when DeveloperToolsDisabled policy is active.
 TEST_F(DeveloperPrivateApiUnitTest, DeveloperPrivateDevModeDisabledPolicy) {
   testing_pref_service()->SetManagedPref(prefs::kExtensionsUIDeveloperMode,
-                                         new base::Value(false));
+                                         base::MakeUnique<base::Value>(false));
 
   UpdateProfileConfigurationDevMode(true);
 
   EXPECT_FALSE(
       profile()->GetPrefs()->GetBoolean(prefs::kExtensionsUIDeveloperMode));
 
   std::unique_ptr<api::developer_private::ProfileInfo> profile_info;
   ASSERT_NO_FATAL_FAILURE(GetProfileConfiguration(&profile_info));
   EXPECT_FALSE(profile_info->in_developer_mode);
   EXPECT_TRUE(profile_info->is_developer_mode_controlled_by_policy);
@@ skipping 10 matching lines @@
   EXPECT_TRUE(
       profile()->GetPrefs()->GetBoolean(prefs::kExtensionsUIDeveloperMode));
 
   std::unique_ptr<api::developer_private::ProfileInfo> profile_info;
   ASSERT_NO_FATAL_FAILURE(GetProfileConfiguration(&profile_info));
   EXPECT_TRUE(profile_info->in_developer_mode);
   EXPECT_FALSE(profile_info->is_developer_mode_controlled_by_policy);
 }
 
 }  // namespace extensions