Removed archived history file deletion on browser start

components/history/core/test/history_backend_db_base_test.h

 // 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.
 
 #ifndef COMPONENTS_HISTORY_CORE_TEST_HISTORY_BACKEND_DB_BASE_TEST_H_
 #define COMPONENTS_HISTORY_CORE_TEST_HISTORY_BACKEND_DB_BASE_TEST_H_
 
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/files/scoped_temp_dir.h"
@@ skipping 29 matching lines @@
   void SetUp() override;
   void TearDown() override;
 
   // Creates the HistoryBackend and HistoryDatabase on the current thread,
   // assigning the values to backend_ and db_.
   void CreateBackendAndDatabase();
   void CreateBackendAndDatabaseAllowFail();
 
   void CreateDBVersion(int version);
 
-  void CreateArchivedDB();
-
   void DeleteBackend();
 
   bool AddDownload(uint32 id, DownloadState state, base::Time time);
 
   base::ScopedTempDir temp_dir_;
 
   base::MessageLoopForUI message_loop_;
 
   // names of the database files
   base::FilePath history_dir_;
 
   // Created via CreateBackendAndDatabase.
   scoped_refptr<HistoryBackend> backend_;
   scoped_ptr<InMemoryHistoryBackend> in_mem_backend_;
   HistoryDatabase* db_;  // Cached reference to the backend's database.
   sql::InitStatus last_profile_error_;
 };
 
 }  // namespace history
 
 #endif  // COMPONENTS_HISTORY_CORE_TEST_HISTORY_BACKEND_DB_BASE_TEST_H_