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

components/offline_pages/background/pick_request_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_PICK_REQUEST_TASK_H_
-#define COMPONENTS_OFFLINE_PAGES_BACKGROUND_PICK_REQUEST_TASK_H_
-
-#include <set>
-
-#include "base/memory/weak_ptr.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.h"
-
-namespace offline_pages {
-
-class DeviceConditions;
-class OfflinerPolicy;
-class PickRequestTask;
-class RequestCoordinatorEventLogger;
-class RequestNotifier;
-class RequestQueueStore;
-
-typedef bool (PickRequestTask::*RequestCompareFunction)(
-    const SavePageRequest* left,
-    const SavePageRequest* right);
-
-class PickRequestTask : public Task {
- public:
-  // Callback to report when a request was available.
-  typedef base::Callback<void(const SavePageRequest& request)>
-      RequestPickedCallback;
-
-  // Callback to report when no request was available.
-  typedef base::Callback<void(bool)> RequestNotPickedCallback;
-
-  // Callback to report available total and available queued request counts.
-  typedef base::Callback<void(size_t, size_t)> RequestCountCallback;
-
-  PickRequestTask(RequestQueueStore* store,
-                  OfflinerPolicy* policy,
-                  RequestNotifier* notifier,
-                  RequestCoordinatorEventLogger* event_logger,
-                  RequestPickedCallback picked_callback,
-                  RequestNotPickedCallback not_picked_callback,
-                  RequestCountCallback request_count_callback,
-                  DeviceConditions& device_conditions,
-                  const std::set<int64_t>& disabled_requests);
-
-  ~PickRequestTask() override;
-
-  // TaskQueue::Task implementation, starts the async chain
-  void Run() override;
-
- private:
-  // Step 1, handle getting the results from the store.
-  void ChooseAndPrune(bool request,
-                      std::vector<std::unique_ptr<SavePageRequest>> requests);
-
-  // Step 2a. Handle choosing an entry, and calling the right picked callback
-  // and the request count callback.
-  void ChooseRequestAndCallback(
-      std::vector<std::unique_ptr<SavePageRequest>> valid_requests);
-
-  // Step 2b. Handle deleting stale entries and notifying observers.
-  void RemoveStaleRequests(std::vector<int64_t> stale_request_ids);
-
-  // Step 3. Send delete notifications for the expired requests.
-  void OnRequestsExpired(std::unique_ptr<UpdateRequestsResult> result);
-
-  // Helper functions.
-
-  // Split requests into valid and expired categories.
-  void SplitRequests(
-      std::vector<std::unique_ptr<SavePageRequest>> requests,
-      std::vector<std::unique_ptr<SavePageRequest>>* valid_requests,
-      std::vector<int64_t>* expired_request_ids);
-
-  // Determine if this request has device conditions appropriate for running it.
-  bool RequestConditionsSatisfied(const SavePageRequest* request);
-
-  // Determine if the new request is preferred under current policies.
-  bool IsNewRequestBetter(const SavePageRequest* oldRequest,
-                          const SavePageRequest* newRequest,
-                          RequestCompareFunction comparator);
-
-  // Returns true if the left hand side is better.
-  bool RetryCountFirstCompareFunction(const SavePageRequest* left,
-                                      const SavePageRequest* right);
-
-  // Returns true if the left hand side is better.
-  bool RecencyFirstCompareFunction(const SavePageRequest* left,
-                                   const SavePageRequest* right);
-
-  // Compare left and right side, returning 1 if the left side is better
-  // (preferred by policy), 0 if the same, and -1 if the right side is better.
-  int CompareRetryCount(const SavePageRequest* left,
-                        const SavePageRequest* right);
-
-  // Compare left and right side, returning 1 if the left side is better
-  // (preferred by policy), 0 if the same, and -1 if the right side is better.
-  int CompareCreationTime(const SavePageRequest* left,
-                          const SavePageRequest* right);
-
-  // Member variables, all pointers are not owned here.
-  RequestQueueStore* store_;
-  OfflinerPolicy* policy_;
-  RequestNotifier* notifier_;
-  RequestCoordinatorEventLogger* event_logger_;
-  RequestPickedCallback picked_callback_;
-  RequestNotPickedCallback not_picked_callback_;
-  RequestCountCallback request_count_callback_;
-  std::unique_ptr<DeviceConditions> device_conditions_;
-  const std::set<int64_t>& disabled_requests_;
-  // Allows us to pass a weak pointer to callbacks.
-  base::WeakPtrFactory<PickRequestTask> weak_ptr_factory_;
-};
-
-}  // namespace offline_pages
-
-#endif  // COMPONENTS_OFFLINE_PAGES_BACKGROUND_PICK_REQUEST_TASK_H_