[OfflinePages] Call NotifyInterrupted for pending requests

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"
@@ skipping 30 matching lines @@
 
  private:
   friend class DownloadNotifyingObserverTest;
 
   DownloadNotifyingObserver(
       std::unique_ptr<OfflinePageDownloadNotifier> notifier,
       ClientPolicyController* policy_controller);
 
   bool IsVisibleInUI(const ClientId& id);
 
+  void NotifyRequestStateChange(const SavePageRequest& request);
+
   // 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_