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

components/offline_pages/background/change_requests_state_task.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_BACKGROUND_CHANGE_REQUESTS_STATE_TASK_H_
-#define COMPONENTS_OFFLINE_PAGES_BACKGROUND_CHANGE_REQUESTS_STATE_TASK_H_
-
-#include <stdint.h>
-
-#include <memory>
-#include <unordered_set>
-#include <vector>
-
-#include "base/memory/weak_ptr.h"
-#include "components/offline_pages/background/request_queue_store.h"
-#include "components/offline_pages/background/save_page_request.h"
-#include "components/offline_pages/core/task.h"
-
-namespace offline_pages {
-
-class ChangeRequestsStateTask : public Task {
- public:
-  ChangeRequestsStateTask(RequestQueueStore* store,
-                          const std::vector<int64_t>& request_ids,
-                          const SavePageRequest::RequestState new_state,
-                          const RequestQueueStore::UpdateCallback& callback);
-  ~ChangeRequestsStateTask() override;
-
-  // TaskQueue::Task implementation.
-  void Run() override;
-
- private:
-  // Step 1. Reading the requests.
-  void ReadRequests();
-  // Step 2. Updates available requests.
-  void UpdateRequests(std::unique_ptr<UpdateRequestsResult> read_result);
-  // Step 3. Processes update result, calls callback.
-  void UpdateCompleted(std::unique_ptr<UpdateRequestsResult> update_result);
-
-  // Store that this task updates.
-  RequestQueueStore* store_;
-  // Request IDs to be updated. Kept as a set to remove duplicates and simplify
-  // the look up of requests that are not found in step 3.
-  std::unordered_set<int64_t> request_ids_;
-  // New state to be set on all entries.
-  SavePageRequest::RequestState new_state_;
-  // Callback to complete the task.
-  RequestQueueStore::UpdateCallback callback_;
-
-  base::WeakPtrFactory<ChangeRequestsStateTask> weak_ptr_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(ChangeRequestsStateTask);
-};
-
-}  // namespace offline_pages
-
-#endif  // COMPONENTS_OFFLINE_PAGES_BACKGROUND_CHANGE_REQUESTS_STATE_TASK_H_