[remote suggestions] Attach the fetch time to RemoteSnippets, ContentSnippets and SnippetArticle

components/ntp_snippets/content_suggestions_metrics.h

Index: components/ntp_snippets/content_suggestions_metrics.h
diff --git a/components/ntp_snippets/content_suggestions_metrics.h b/components/ntp_snippets/content_suggestions_metrics.h
index 6a79e5e8601eaf18b5c2c481d8317aff308f9525..d004c45694acb5d238e8868adfb986ff0e5dc9fd 100644
--- a/components/ntp_snippets/content_suggestions_metrics.h
+++ b/components/ntp_snippets/content_suggestions_metrics.h
@@ -23,8 +23,8 @@ void OnSuggestionShown(int global_position,
                        Category category,
                        int position_in_category,
                        base::Time publish_date,
-                       base::Time last_background_fetch_time,
-                       float score);
+                       float score,
+                       base::Time fetch_date);
 
 // TODO(crbug.com/682160): Take struct, so that one could not mix up the
 // order of arguments.