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

chrome/browser/extensions/api/management/management_browsertest.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.
 
 #include <stddef.h>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
@@ skipping 554 matching lines @@
                   browser()->profile())
                   ->GetForceInstallList()
                   ->empty())
       << kForceInstallNotEmptyHelp;
 
   base::ListValue forcelist;
   forcelist.AppendString(BuildForceInstallPolicyValue(
       kExtensionId, "http://localhost/autoupdate/manifest"));
   PolicyMap policies;
   policies.Set(policy::key::kExtensionInstallForcelist,
-               policy::POLICY_LEVEL_MANDATORY,
-               policy::POLICY_SCOPE_USER,
-               policy::POLICY_SOURCE_CLOUD,
-               forcelist.DeepCopy(),
-               NULL);
+               policy::POLICY_LEVEL_MANDATORY, policy::POLICY_SCOPE_USER,
+               policy::POLICY_SOURCE_CLOUD, forcelist.CreateDeepCopy(),
+               nullptr);
   extensions::TestExtensionRegistryObserver install_observer(registry);
   UpdateProviderPolicy(policies);
   install_observer.WaitForExtensionWillBeInstalled();
 
   // Check if the extension got installed.
   ASSERT_EQ(size_before + 1, registry->enabled_extensions().size());
   const Extension* extension = service->GetExtensionById(kExtensionId, false);
   ASSERT_TRUE(extension);
   ASSERT_EQ("2.0", extension->VersionString());
   EXPECT_EQ(Manifest::EXTERNAL_POLICY_DOWNLOAD, extension->location());
@@ skipping 64 matching lines @@
   ASSERT_TRUE(extension);
   EXPECT_EQ(Manifest::INTERNAL, extension->location());
   EXPECT_TRUE(service->IsExtensionEnabled(kExtensionId));
 
   // Setup the force install policy. It should override the location.
   base::ListValue forcelist;
   forcelist.AppendString(BuildForceInstallPolicyValue(
       kExtensionId, "http://localhost/autoupdate/manifest"));
   PolicyMap policies;
   policies.Set(policy::key::kExtensionInstallForcelist,
-               policy::POLICY_LEVEL_MANDATORY,
-               policy::POLICY_SCOPE_USER,
-               policy::POLICY_SOURCE_CLOUD,
-               forcelist.DeepCopy(),
-               NULL);
+               policy::POLICY_LEVEL_MANDATORY, policy::POLICY_SCOPE_USER,
+               policy::POLICY_SOURCE_CLOUD, forcelist.CreateDeepCopy(),
+               nullptr);
   extensions::TestExtensionRegistryObserver install_observer(registry);
   UpdateProviderPolicy(policies);
   install_observer.WaitForExtensionWillBeInstalled();
 
   ASSERT_EQ(size_before + 1, registry->enabled_extensions().size());
   extension = service->GetExtensionById(kExtensionId, false);
   ASSERT_TRUE(extension);
   EXPECT_EQ(Manifest::EXTERNAL_POLICY_DOWNLOAD, extension->location());
   EXPECT_TRUE(service->IsExtensionEnabled(kExtensionId));
 
@@ skipping 18 matching lines @@
 
   DisableExtension(kExtensionId);
   EXPECT_EQ(1u, registry->disabled_extensions().size());
   extension = service->GetExtensionById(kExtensionId, true);
   EXPECT_TRUE(extension);
   EXPECT_FALSE(service->IsExtensionEnabled(kExtensionId));
 
   // Install the policy again. It should overwrite the extension's location,
   // and force enable it too.
   policies.Set(policy::key::kExtensionInstallForcelist,
-               policy::POLICY_LEVEL_MANDATORY,
-               policy::POLICY_SCOPE_USER,
-               policy::POLICY_SOURCE_CLOUD,
-               forcelist.DeepCopy(),
-               NULL);
+               policy::POLICY_LEVEL_MANDATORY, policy::POLICY_SCOPE_USER,
+               policy::POLICY_SOURCE_CLOUD, forcelist.CreateDeepCopy(),
+               nullptr);
 
   extensions::TestExtensionRegistryObserver extension_observer(registry);
   UpdateProviderPolicy(policies);
   extension_observer.WaitForExtensionWillBeInstalled();
 
   ASSERT_EQ(size_before + 1, registry->enabled_extensions().size());
   extension = service->GetExtensionById(kExtensionId, false);
   ASSERT_TRUE(extension);
   EXPECT_EQ(Manifest::EXTERNAL_POLICY_DOWNLOAD, extension->location());
   EXPECT_TRUE(service->IsExtensionEnabled(kExtensionId));
   EXPECT_TRUE(registry->disabled_extensions().is_empty());
 }