Add logic for fetching the Reading List entries

components/ntp_snippets/reading_list/reading_list_suggestions_provider.h

Index: components/ntp_snippets/reading_list/reading_list_suggestions_provider.h
diff --git a/components/ntp_snippets/reading_list/reading_list_suggestions_provider.h b/components/ntp_snippets/reading_list/reading_list_suggestions_provider.h
index 107d0b9ecf1140a11f3956d03063dec7eb0311b0..fcb1c5e0f734d855410cfffba8e4ecdd368ae55f 100644
--- a/components/ntp_snippets/reading_list/reading_list_suggestions_provider.h
+++ b/components/ntp_snippets/reading_list/reading_list_suggestions_provider.h
@@ -49,10 +49,15 @@ class ReadingListSuggestionsProvider : public ContentSuggestionsProvider,
 
   // ReadingListModelObserver implementation.
   void ReadingListModelLoaded(const ReadingListModel* model) override;
+  void ReadingListModelBeingDeleted(const ReadingListModel* model) override;
 
  private:
+  // The actual method to fetch Reading List entries. Must be called after the
+  // model is loaded.
   void FetchReadingListInternal();
 
+  // Updates the |category_status_| and notifies the |observer_|, if necessary.
+  void NotifyStatusChanged(CategoryStatus new_status);
   CategoryStatus category_status_;
   const Category provided_category_;