[Bookmark suggestions] Clean-up in the api: switch const* to const&

components/ntp_snippets/bookmarks/bookmark_last_visit_utils.h

Index: components/ntp_snippets/bookmarks/bookmark_last_visit_utils.h
diff --git a/components/ntp_snippets/bookmarks/bookmark_last_visit_utils.h b/components/ntp_snippets/bookmarks/bookmark_last_visit_utils.h
index 7b59832397ff0a1515aa7d5bd5871779a7dea01f..3f354cf4ee83f668a09d4fa2df274130a876bbe2 100644
--- a/components/ntp_snippets/bookmarks/bookmark_last_visit_utils.h
+++ b/components/ntp_snippets/bookmarks/bookmark_last_visit_utils.h
@@ -38,7 +38,7 @@ void UpdateBookmarkOnURLVisitedInMainFrame(
 // present and |creation_date_fallback| is true, the date when the bookmarks is
 // created is used as the alst visit date (most likely, it is the date when the
 // bookmark was synced to this device).
-bool GetLastVisitDateForNTPBookmark(const bookmarks::BookmarkNode* node,
+bool GetLastVisitDateForNTPBookmark(const bookmarks::BookmarkNode& node,
                                     bool creation_date_fallback,
                                     bool consider_visits_from_desktop,
                                     base::Time* out);
@@ -48,7 +48,7 @@ void MarkBookmarksDismissed(bookmarks::BookmarkModel* bookmark_model,
                             const GURL& url);
 
 // Gets the dismissed flag for a given bookmark |node|. Defaults to false.
-bool IsDismissedFromNTPForBookmark(const bookmarks::BookmarkNode* node);
+bool IsDismissedFromNTPForBookmark(const bookmarks::BookmarkNode& node);
 
 // Removes the dismissed flag from all bookmarks (only for debugging).
 void MarkAllBookmarksUndismissed(bookmarks::BookmarkModel* bookmark_model);