Move all components/offline_pages/ files into component/offline_pages/core

components/offline_pages/archive_manager.h

-// Copyright 2016 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_OFFLINE_PAGES_ARCHIVE_MANAGER_H_
-#define COMPONENTS_OFFLINE_PAGES_ARCHIVE_MANAGER_H_
-
-#include <set>
-#include <vector>
-
-#include "base/callback_forward.h"
-#include "base/files/file_path.h"
-#include "base/memory/ref_counted.h"
-
-namespace base {
-class SequencedTaskRunner;
-}  // namespace base
-
-namespace offline_pages {
-
-// Class that manages all archive files for offline pages. They are all stored
-// in a specific archive directory.
-// All tasks are performed using |task_runner_|.
-class ArchiveManager {
- public:
-  struct StorageStats {
-    int64_t free_disk_space;
-    int64_t total_archives_size;
-  };
-
-  ArchiveManager(const base::FilePath& archives_dir,
-                 const scoped_refptr<base::SequencedTaskRunner>& task_runner);
-  virtual ~ArchiveManager();
-
-  // Creates archives directory if one does not exist yet;
-  virtual void EnsureArchivesDirCreated(const base::Closure& callback);
-
-  // Checks whether an archive with specified |archive_path| exists.
-  virtual void ExistsArchive(const base::FilePath& archive_path,
-                             const base::Callback<void(bool)>& callback);
-
-  // Deletes an archive with specified |archive_path|.
-  // It is considered successful to attempt to delete a file that does not
-  // exist.
-  virtual void DeleteArchive(const base::FilePath& archive_path,
-                             const base::Callback<void(bool)>& callback);
-
-  // Deletes multiple archives that are specified in |archive_paths|.
-  // It is considered successful to attempt to delete a file that does not
-  // exist.
-  virtual void DeleteMultipleArchives(
-      const std::vector<base::FilePath>& archive_paths,
-      const base::Callback<void(bool)>& callback);
-
-  // Lists all archive files in the archive directory.
-  virtual void GetAllArchives(
-      const base::Callback<void(const std::set<base::FilePath>&)>& callback)
-      const;
-
-  // Gets stats about archive storage, i.e. total archive sizes and free disk
-  // space.
-  virtual void GetStorageStats(
-      const base::Callback<void(const StorageStats& storage_sizes)>& callback)
-      const;
-
- protected:
-  ArchiveManager();
-
- private:
-  // Path under which all of the managed archives should be stored.
-  base::FilePath archives_dir_;
-  // Task runner for running file operations.
-  scoped_refptr<base::SequencedTaskRunner> task_runner_;
-};
-
-}  // namespace offline_pages
-
-#endif  // COMPONENTS_OFFLINE_PAGES_ARCHIVE_MANAGER_H_