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

components/offline_pages/background/cleanup_task.cc

-// 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.
-
-#include "components/offline_pages/background/cleanup_task.h"
-
-#include "base/bind.h"
-#include "base/logging.h"
-#include "components/offline_pages/background/offliner_policy.h"
-#include "components/offline_pages/background/offliner_policy_utils.h"
-#include "components/offline_pages/background/request_coordinator_event_logger.h"
-#include "components/offline_pages/background/request_notifier.h"
-#include "components/offline_pages/background/request_queue_store.h"
-#include "components/offline_pages/background/save_page_request.h"
-
-namespace offline_pages {
-
-CleanupTask::CleanupTask(RequestQueueStore* store,
-                         OfflinerPolicy* policy,
-                         RequestNotifier* notifier,
-                         RequestCoordinatorEventLogger* event_logger)
-    : store_(store),
-      policy_(policy),
-      notifier_(notifier),
-      event_logger_(event_logger),
-      weak_ptr_factory_(this) {}
-
-CleanupTask::~CleanupTask() {}
-
-void CleanupTask::Run() {
-  GetRequests();
-}
-
-void CleanupTask::GetRequests() {
-  // Get all the requests from the queue, we will classify them in the callback.
-  store_->GetRequests(
-      base::Bind(&CleanupTask::Prune, weak_ptr_factory_.GetWeakPtr()));
-}
-
-void CleanupTask::Prune(
-    bool success,
-    std::vector<std::unique_ptr<SavePageRequest>> requests) {
-  // If there is nothing to do, return right away.
-  if (requests.empty()) {
-    TaskComplete();
-    return;
-  }
-
-  // Get the expired requests to be removed from the queue.
-  std::vector<int64_t> expired_request_ids;
-  GetExpiredRequestIds(std::move(requests), &expired_request_ids);
-
-  // Continue processing by handling expired requests, if any.
-  if (expired_request_ids.size() == 0) {
-    TaskComplete();
-    return;
-  }
-
-  // TODO(petewil): Add UMA saying why we remove them
-  // TODO(petewil): Round trip the reason for deleting through the RQ
-  store_->RemoveRequests(expired_request_ids,
-                         base::Bind(&CleanupTask::OnRequestsExpired,
-                                    weak_ptr_factory_.GetWeakPtr()));
-}
-
-void CleanupTask::OnRequestsExpired(
-    std::unique_ptr<UpdateRequestsResult> result) {
-  RequestNotifier::BackgroundSavePageResult save_page_result(
-      RequestNotifier::BackgroundSavePageResult::EXPIRED);
-  for (const auto& request : result->updated_items) {
-    event_logger_->RecordDroppedSavePageRequest(
-        request.client_id().name_space, save_page_result, request.request_id());
-    notifier_->NotifyCompleted(request, save_page_result);
-  }
-
-  // The task is now done, return control to the task queue.
-  TaskComplete();
-}
-
-void CleanupTask::GetExpiredRequestIds(
-    std::vector<std::unique_ptr<SavePageRequest>> requests,
-    std::vector<int64_t>* expired_request_ids) {
-  for (auto& request : requests) {
-    // Check for requests past their expiration time or with too many tries.  If
-    // it is not still valid, push the request and the reason onto the deletion
-    // list.
-    OfflinerPolicyUtils::RequestExpirationStatus status =
-        OfflinerPolicyUtils::CheckRequestExpirationStatus(request.get(),
-                                                          policy_);
-
-    // TODO(petewil): The strategy of checking the state below relies on a
-    // reconciliation task, so at startup we convert any OFFLINING requests to
-    // AVAILABLE.  Otherwise, requests in the OFFLINING state when chromium dies
-    // will never be cleaned up.
-
-    // If we are not working on this request in an offliner, and it is not
-    // valid, put it on a list for removal.  We make the exception for current
-    // requests because the request might expire after being chosen and before
-    // we call cleanup, and we shouldn't delete the request while offlining it.
-    if (status != OfflinerPolicyUtils::RequestExpirationStatus::VALID &&
-        request->request_state() != SavePageRequest::RequestState::OFFLINING) {
-      // TODO(petewil): Push both request and reason, will need to change type
-      // of list to pairs.
-      expired_request_ids->push_back(request->request_id());
-    }
-  }
-}
-
-}  // namespace offline_pages