Track if a ReadingListEntry has been dismissed

components/reading_list/core/reading_list_model_impl.h

Index: components/reading_list/core/reading_list_model_impl.h
diff --git a/components/reading_list/core/reading_list_model_impl.h b/components/reading_list/core/reading_list_model_impl.h
index d388d8090f987aff7b54a3c2735cd4c544d1751d..9e91e1ebb5bfc37c264e12ba8b9bab6aafb64b19 100644
--- a/components/reading_list/core/reading_list_model_impl.h
+++ b/components/reading_list/core/reading_list_model_impl.h
@@ -80,6 +80,9 @@ class ReadingListModelImpl : public ReadingListModel,
                              const GURL& distilled_url,
                              int64_t distillation_size,
                              const base::Time& distillation_date) override;
+  void SetContentSuggestionsExtra(
+      const GURL& url,
+      const reading_list::ContentSuggestionsExtra& extra) override;
 
   void SyncAddEntry(std::unique_ptr<ReadingListEntry> entry) override;
   ReadingListEntry* SyncMergeEntry(