FetchMore functionality backend

components/ntp_snippets/bookmarks/bookmark_suggestions_provider.cc

Index: components/ntp_snippets/bookmarks/bookmark_suggestions_provider.cc
diff --git a/components/ntp_snippets/bookmarks/bookmark_suggestions_provider.cc b/components/ntp_snippets/bookmarks/bookmark_suggestions_provider.cc
index 1be8186bf43253f62e9e3ec41b61527a7f50011e..435ae520b1ed94191802e1a2aadf03e843abb675 100644
--- a/components/ntp_snippets/bookmarks/bookmark_suggestions_provider.cc
+++ b/components/ntp_snippets/bookmarks/bookmark_suggestions_provider.cc
@@ -152,6 +152,11 @@ void BookmarkSuggestionsProvider::FetchSuggestionImage(
       FROM_HERE, base::Bind(callback, gfx::Image()));
 }
 
+void BookmarkSuggestionsProvider::FetchMore(const Category& category,
+                                            FetchedMoreCallback callback) {
+  // Ignored.

[Marc Treib, 2016/10/20 16:51:39]

Hm. In principle, the bookmarks provider (like most/all others) could implement
"more" functionality. Right now there's no way to access it, because the "more"
button instead opens the bookmark manager. But have you discussed this with
Patrick?
If we don't expect to ever get here, then put a NOTREACHED() there.

[Marc Treib, 2016/10/28 14:49:49]

I discussed this with dgn and bauerb: We'll unify "get suggestions" (currently
implemented via the observer) and "fetch more". They'll fill you in on the
details :)

+}
+
 void BookmarkSuggestionsProvider::ClearHistory(
     base::Time begin,
     base::Time end,