Finalize backend for fetching more NTPSnippets.

components/ntp_snippets/sessions/foreign_sessions_suggestions_provider.cc

Index: components/ntp_snippets/sessions/foreign_sessions_suggestions_provider.cc
diff --git a/components/ntp_snippets/sessions/foreign_sessions_suggestions_provider.cc b/components/ntp_snippets/sessions/foreign_sessions_suggestions_provider.cc
index 48572a8536071973a38ccfd31a0aa0a3cf976201..79dff5389a8add73491b990fd18a7e090e19dbe7 100644
--- a/components/ntp_snippets/sessions/foreign_sessions_suggestions_provider.cc
+++ b/components/ntp_snippets/sessions/foreign_sessions_suggestions_provider.cc
@@ -149,10 +149,11 @@ void ForeignSessionsSuggestionsProvider::FetchSuggestionImage(
       FROM_HERE, base::Bind(callback, gfx::Image()));
 }
 
-void ForeignSessionsSuggestionsProvider::FetchMore(
+void ForeignSessionsSuggestionsProvider::Fetch(
     const Category& category,
-    FetchedMoreCallback callback) {
-  // Ignored.
+    std::set<std::string> known_suggestion_ids,
+    FetchingCallback callback) {
+  NOTREACHED();
 }
 
 void ForeignSessionsSuggestionsProvider::ClearHistory(