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

components/offline_pages/background/change_requests_state_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/change_requests_state_task.h"
-
-#include "base/bind.h"
-
-namespace offline_pages {
-
-ChangeRequestsStateTask::ChangeRequestsStateTask(
-    RequestQueueStore* store,
-    const std::vector<int64_t>& request_ids,
-    const SavePageRequest::RequestState new_state,
-    const RequestQueueStore::UpdateCallback& callback)
-    : store_(store),
-      request_ids_(request_ids.begin(), request_ids.end()),
-      new_state_(new_state),
-      callback_(callback),
-      weak_ptr_factory_(this) {}
-
-ChangeRequestsStateTask::~ChangeRequestsStateTask() {}
-
-void ChangeRequestsStateTask::Run() {
-  ReadRequests();
-}
-
-void ChangeRequestsStateTask::ReadRequests() {
-  std::vector<int64_t> request_ids(request_ids_.begin(), request_ids_.end());
-  store_->GetRequestsByIds(request_ids,
-                           base::Bind(&ChangeRequestsStateTask::UpdateRequests,
-                                      weak_ptr_factory_.GetWeakPtr()));
-}
-
-void ChangeRequestsStateTask::UpdateRequests(
-    std::unique_ptr<UpdateRequestsResult> read_result) {
-  if (read_result->store_state != StoreState::LOADED ||
-      read_result->updated_items.empty()) {
-    UpdateCompleted(std::move(read_result));
-    return;
-  }
-
-  // We are only going to make an update to the items that were found. Statuses
-  // of the missing items will be added at the end.
-  std::vector<SavePageRequest> items_to_update;
-  for (auto request : read_result->updated_items) {
-    request.set_request_state(new_state_);
-    items_to_update.push_back(request);
-  }
-
-  store_->UpdateRequests(items_to_update,
-                         base::Bind(&ChangeRequestsStateTask::UpdateCompleted,
-                                    weak_ptr_factory_.GetWeakPtr()));
-}
-
-void ChangeRequestsStateTask::UpdateCompleted(
-    std::unique_ptr<UpdateRequestsResult> update_result) {
-  // Because the first step might not have found some of the items, we should
-  // look their IDs now and include in the final result as not found.
-
-  // Look up the missing items by removing the items present in the result
-  // statuses from original list of request IDs.
-  for (const auto& id_status_pair : update_result->item_statuses)
-    request_ids_.erase(id_status_pair.first);
-
-  // Update the final result for the items that are left in |request_ids_|, as
-  // these are identified as being missing from the final result.
-  for (int64_t request_id : request_ids_) {
-    update_result->item_statuses.push_back(
-        std::make_pair(request_id, ItemActionStatus::NOT_FOUND));
-  }
-
-  callback_.Run(std::move(update_result));
-  TaskComplete();
-}
-
-}  // namespace offline_pages