[Offline Pages] Check for the appropriate namespace when showing notifications.

components/offline_pages/downloads/download_ui_adapter.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_PAGE_DOWNLOADS_DOWNLOAD_UI_ADAPTER_H_
 #define COMPONENTS_OFFLINE_PAGE_DOWNLOADS_DOWNLOAD_UI_ADAPTER_H_
 
 #include <map>
 #include <memory>
 #include <string>
@@ skipping 38 matching lines @@
    protected:
     virtual ~Observer() = default;
   };
 
   explicit DownloadUIAdapter(OfflinePageModel* model);
   ~DownloadUIAdapter() override;
 
   static DownloadUIAdapter* FromOfflinePageModel(
       OfflinePageModel* offline_page_model);
 
+  // Checks a client ID for proper namespace and ID format to be shown in the
+  // Downloads Home UI.
+  static bool IsVisibleInUI(const ClientId& page);
+
   // This adapter is potentially shared by UI elements, each of which adds
   // itself as an observer.
   // When the last observer si removed, cached list of items is destroyed and
   // next time the initial loading will take longer.
   void AddObserver(Observer* observer);
   void RemoveObserver(Observer* observer);
 
   // Returns all UI items. The list contains references to items in the cache
   // and has to be used synchronously.
   std::vector<const DownloadUIItem*> GetAllItems() const;
@@ skipping 35 matching lines @@
 
   void LoadCache();
   void ClearCache();
 
   // Task callbacks.
   void OnOfflinePagesLoaded(const MultipleOfflinePageItemResult& pages);
   void NotifyItemsLoaded(Observer* observer);
   void OnOfflinePagesChanged(const MultipleOfflinePageItemResult& pages);
   void OnDeletePagesDone(DeletePageResult result);
 
-  bool IsVisibleInUI(const ClientId& page);
-
   // Always valid, this class is a member of the model.
   OfflinePageModel* model_;
 
   State state_;
 
   // The cache of UI items. The key is DownloadUIItem.guid.
   DownloadUIItems items_;
 
   // The observers.
   base::ObserverList<Observer> observers_;
   int observers_count_;
 
   base::WeakPtrFactory<DownloadUIAdapter> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(DownloadUIAdapter);
 };
 
 }  // namespace offline_pages
 
 #endif  // COMPONENTS_OFFLINE_PAGE_DOWNLOADS_DOWNLOAD_UI_ADAPTER_H_