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

components/offline_pages/downloads/download_notifying_observer.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_DOWNLOADS_DOWNLOAD_NOTIFYING_OBSERVER_H_
-#define COMPONENTS_OFFLINE_PAGES_DOWNLOADS_DOWNLOAD_NOTIFYING_OBSERVER_H_
-
-#include <memory>
-
-#include "base/guid.h"
-#include "base/macros.h"
-#include "components/offline_pages/background/request_coordinator.h"
-#include "components/offline_pages/client_policy_controller.h"
-
-namespace offline_pages {
-
-struct ClientId;
-struct OfflinePageDownloadNotifier;
-class ClientPolicyController;
-class SavePageRequest;
-
-// Class observing the save page requests and issuing corresponding user
-// notifications as requests are added or updated.
-class DownloadNotifyingObserver : public RequestCoordinator::Observer,
-                                  public base::SupportsUserData::Data {
- public:
-  ~DownloadNotifyingObserver() override;
-
-  static DownloadNotifyingObserver* GetFromRequestCoordinator(
-      RequestCoordinator* request_coordinator);
-  static void CreateAndStartObserving(
-      RequestCoordinator* request_coordinator,
-      std::unique_ptr<OfflinePageDownloadNotifier> notifier);
-
-  // RequestCoordinator::Observer implementation:
-  void OnAdded(const SavePageRequest& request) override;
-  void OnChanged(const SavePageRequest& request) override;
-  void OnCompleted(
-      const SavePageRequest& request,
-      RequestCoordinator::BackgroundSavePageResult status) override;
-
- private:
-  friend class DownloadNotifyingObserverTest;
-
-  DownloadNotifyingObserver(
-      std::unique_ptr<OfflinePageDownloadNotifier> notifier,
-      ClientPolicyController* policy_controller);
-
-  bool IsVisibleInUI(const ClientId& id);
-
-  // Used to issue notifications related to save page requests.
-  std::unique_ptr<OfflinePageDownloadNotifier> notifier_;
-  // Used to determine policy-related permissions. Not owned.
-  ClientPolicyController* policy_controller_;
-
-  DISALLOW_COPY_AND_ASSIGN(DownloadNotifyingObserver);
-};
-
-}  // namespace offline_pages
-
-#endif  // COMPONENTS_OFFLINE_PAGES_DOWNLOADS_DOWNLOAD_NOTIFYING_OBSERVER_H_