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

components/offline_pages/background/request_queue.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_H_
-#define COMPONENTS_OFFLINE_PAGES_BACKGROUND_REQUEST_QUEUE_H_
-
-#include <stdint.h>
-
-#include <memory>
-#include <set>
-#include <string>
-#include <vector>
-
-#include "base/callback.h"
-#include "base/macros.h"
-#include "base/memory/weak_ptr.h"
-#include "components/offline_pages/background/device_conditions.h"
-#include "components/offline_pages/background/pick_request_task.h"
-#include "components/offline_pages/background/pick_request_task_factory.h"
-#include "components/offline_pages/background/request_queue_results.h"
-#include "components/offline_pages/background/save_page_request.h"
-#include "components/offline_pages/core/task_queue.h"
-#include "components/offline_pages/offline_page_item.h"
-#include "components/offline_pages/offline_store_types.h"
-
-namespace offline_pages {
-
-class RequestQueueStore;
-class PickRequestTaskFactory;
-
-// Class responsible for managing save page requests.
-class RequestQueue {
- public:
-
-  // Callback used for |GetRequests|.
-  typedef base::Callback<void(GetRequestsResult,
-                              std::vector<std::unique_ptr<SavePageRequest>>)>
-      GetRequestsCallback;
-
-  // Callback used for |AddRequest|.
-  typedef base::Callback<void(AddRequestResult, const SavePageRequest& request)>
-      AddRequestCallback;
-
-  // Callback used by |ChangeRequestsState|.
-  typedef base::Callback<void(std::unique_ptr<UpdateRequestsResult>)>
-      UpdateCallback;
-
-  // Callback used by |UdpateRequest|.
-  typedef base::Callback<void(UpdateRequestResult)> UpdateRequestCallback;
-
-  explicit RequestQueue(std::unique_ptr<RequestQueueStore> store);
-  ~RequestQueue();
-
-  // Gets all of the active requests from the store. Calling this method may
-  // schedule purging of the request queue.
-  void GetRequests(const GetRequestsCallback& callback);
-
-  // Adds |request| to the request queue. Result is returned through |callback|.
-  // In case adding the request violates policy, the result will fail with
-  // appropriate result. Callback will also return a copy of a request with all
-  // fields set.
-  void AddRequest(const SavePageRequest& request,
-                  const AddRequestCallback& callback);
-
-  // Removes the requests matching the |request_ids|. Result is returned through
-  // |callback|.  If a request id cannot be removed, this will still remove the
-  // others.
-  void RemoveRequests(const std::vector<int64_t>& request_ids,
-                      const UpdateCallback& callback);
-
-  // Changes the state to |new_state| for requests matching the
-  // |request_ids|. Results are returned through |callback|.
-  void ChangeRequestsState(const std::vector<int64_t>& request_ids,
-                           const SavePageRequest::RequestState new_state,
-                           const UpdateCallback& callback);
-
-  // Marks attempt with |request_id| as started. Results are returned through
-  // |callback|.
-  void MarkAttemptStarted(int64_t request_id, const UpdateCallback& callback);
-
-  // Marks attempt with |request_id| as aborted. Results are returned through
-  // |callback|.
-  void MarkAttemptAborted(int64_t request_id, const UpdateCallback& callback);
-
-  // Marks attempt with |request_id| as completed. The attempt may have
-  // completed with either success or failure (not denoted here). Results
-  // are returned through |callback|.
-  void MarkAttemptCompleted(int64_t request_id, const UpdateCallback& callback);
-
-  // Make a task to pick the next request, and report our choice to the
-  // callbacks.
-  void PickNextRequest(
-      PickRequestTask::RequestPickedCallback picked_callback,
-      PickRequestTask::RequestNotPickedCallback not_picked_callback,
-      PickRequestTask::RequestCountCallback request_count_callback,
-      DeviceConditions& conditions,
-      std::set<int64_t>& disabled_requests);
-
-  // Takes ownership of the factory.  We use a setter to allow users of the
-  // request queue to not need a PickerFactory to create it, since we have lots
-  // of code using the request queue.  The request coordinator will set a
-  // factory before calling PickNextRequest.
-  void SetPickerFactory(std::unique_ptr<PickRequestTaskFactory> factory) {
-    picker_factory_ = std::move(factory);
-  }
-
- private:
-  // Callback used by |PurgeRequests|.
-  typedef base::Callback<void(UpdateRequestResult,
-                              int /* removed requests count */)>
-      PurgeRequestsCallback;
-
-  // Purges the queue, removing the requests that are no longer relevant, e.g.
-  // expired request. Result is returned through |callback| carries the number
-  // of removed requests.
-  void PurgeRequests(const PurgeRequestsCallback& callback);
-
-  std::unique_ptr<RequestQueueStore> store_;
-
-  // Task queue to serialize store access.
-  TaskQueue task_queue_;
-
-  // Builds PickRequestTask objects.
-  std::unique_ptr<PickRequestTaskFactory> picker_factory_;
-
-  // Allows us to pass a weak pointer to callbacks.
-  base::WeakPtrFactory<RequestQueue> weak_ptr_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(RequestQueue);
-};
-
-}  // namespace offline_pages
-
-#endif  // COMPONENTS_OFFLINE_PAGES_BACKGROUND_REQUEST_QUEUE_H_