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

components/offline_pages/background/request_queue_in_memory_store.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_REQUEST_QUEUE_IN_MEMORY_STORE_H_
-#define COMPONENTS_OFFLINE_PAGES_BACKGROUND_REQUEST_QUEUE_IN_MEMORY_STORE_H_
-
-#include <stdint.h>
-
-#include <map>
-
-#include "base/macros.h"
-#include "components/offline_pages/background/request_queue_store.h"
-#include "components/offline_pages/background/save_page_request.h"
-
-namespace offline_pages {
-
-// Interface for classes storing save page requests.
-class RequestQueueInMemoryStore : public RequestQueueStore {
- public:
-  RequestQueueInMemoryStore();
-  ~RequestQueueInMemoryStore() override;
-
-  // RequestQueueStore implementaiton.
-  void GetRequests(const GetRequestsCallback& callback) override;
-  void GetRequestsByIds(const std::vector<int64_t>& request_ids,
-                        const UpdateCallback& callback) override;
-  void AddRequest(const SavePageRequest& offline_page,
-                  const AddCallback& callback) override;
-  void UpdateRequests(const std::vector<SavePageRequest>& requests,
-                      const UpdateCallback& callback) override;
-  void RemoveRequests(const std::vector<int64_t>& request_ids,
-                      const UpdateCallback& callback) override;
-
-  void Reset(const ResetCallback& callback) override;
-  StoreState state() const override;
-
- private:
-  typedef std::map<int64_t, SavePageRequest> RequestsMap;
-  RequestsMap requests_;
-
-  DISALLOW_COPY_AND_ASSIGN(RequestQueueInMemoryStore);
-};
-
-}  // namespace offline_pages
-
-#endif  // COMPONENTS_OFFLINE_PAGES_BACKGROUND_REQUEST_QUEUE_IN_MEMORY_STORE_H_