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 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,
-                              bool cleanup_needed)>
-      RequestPickedCallback;
-
-  // Callback to report when no request was available.
-  typedef base::Callback<void(bool non_user_requests, bool cleanup_needed)>
-      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,
-                  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. get the requests
-  void GetRequests();
-
-  // Step 2. pick a request that we like best from available requests.
-  void Choose(bool get_succeeded,
-              std::vector<std::unique_ptr<SavePageRequest>> requests);
-
-  // Helper functions.
-
-  // 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_;
-  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_