Convert //chrome/browser/chromeos from scoped_ptr to std::unique_ptr

chrome/browser/chromeos/extensions/device_local_account_external_policy_loader.h

 // 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.
 
 #ifndef CHROME_BROWSER_CHROMEOS_EXTENSIONS_DEVICE_LOCAL_ACCOUNT_EXTERNAL_POLICY_LOADER_H_
 #define CHROME_BROWSER_CHROMEOS_EXTENSIONS_DEVICE_LOCAL_ACCOUNT_EXTERNAL_POLICY_LOADER_H_
 
+#include <memory>
+
 #include "base/callback_forward.h"
 #include "base/compiler_specific.h"
 #include "base/files/file_path.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/sequenced_task_runner.h"
 #include "chrome/browser/chromeos/extensions/external_cache.h"
 #include "chrome/browser/extensions/external_loader.h"
 #include "components/policy/core/common/cloud/cloud_policy_store.h"
 
 namespace chromeos {
 
 // A specialization of the ExternalLoader that serves external extensions from
 // the enterprise policy force-install list. This class is used for device-local
 // accounts in place of the ExternalPolicyLoader. The difference is that while
@@ skipping 38 matching lines @@
  private:
   // If the cache was started, it must be stopped before |this| is destroyed.
   ~DeviceLocalAccountExternalPolicyLoader() override;
 
   // Pass the current list of force-installed extensions from the |store_| to
   // the |external_cache_|.
   void UpdateExtensionListFromStore();
 
   policy::CloudPolicyStore* store_;
   const base::FilePath cache_dir_;
-  scoped_ptr<ExternalCache> external_cache_;
+  std::unique_ptr<ExternalCache> external_cache_;
 
   DISALLOW_COPY_AND_ASSIGN(DeviceLocalAccountExternalPolicyLoader);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_EXTENSIONS_DEVICE_LOCAL_ACCOUNT_EXTERNAL_POLICY_LOADER_H_