Convert //sync from scoped_ptr to std::unique_ptr

sync/syncable/directory_unittest.h

 // Copyright 2014 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 SYNC_SYNCABLE_DIRECTORY_UNITTEST_H_
 #define SYNC_SYNCABLE_DIRECTORY_UNITTEST_H_
 
 #include <stdint.h>
 
 #include <string>
@@ skipping 68 matching lines @@
   // pending changes.  This is intended to simulate the recovery from a crash
   // scenario.  The same warnings for SimulateSaveAndReloadDir apply here.
   DirOpenResult SimulateCrashAndReloadDir();
 
   void GetAllMetaHandles(BaseTransaction* trans, MetahandleSet* result);
   void CheckPurgeEntriesWithTypeInSucceeded(ModelTypeSet types_to_purge,
                                             bool before_reload);
   bool IsInDirtyMetahandles(int64_t metahandle);
   bool IsInMetahandlesToPurge(int64_t metahandle);
 
-  scoped_ptr<Directory>& dir();
+  std::unique_ptr<Directory>& dir();
   DirectoryChangeDelegate* directory_change_delegate();
   Encryptor* encryptor();
   TestUnrecoverableErrorHandler* unrecoverable_error_handler();
 
  private:
   void ValidateEntry(BaseTransaction* trans,
                      int64_t id,
                      bool check_name,
                      const std::string& name,
                      int64_t base_version,
                      int64_t server_version,
                      bool is_del);
 
   base::MessageLoop message_loop_;
-  scoped_ptr<Directory> dir_;
+  std::unique_ptr<Directory> dir_;
   NullDirectoryChangeDelegate delegate_;
   FakeEncryptor encryptor_;
   TestUnrecoverableErrorHandler handler_;
   sql::Connection connection_;
 };
 
 }  // namespace syncable
 
 }  // namespace syncer
 
 #endif  // SYNC_SYNCABLE_DIRECTORY_UNITTEST_H_