FetchMore functionality backend

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 384352ebf4f18275ffb5424230d0a2677834b318..6dfd06005f87df7d927bd7609b5c56492578669b 100644
--- a/components/ntp_snippets/sessions/foreign_sessions_suggestions_provider.cc
+++ b/components/ntp_snippets/sessions/foreign_sessions_suggestions_provider.cc
@@ -149,6 +149,12 @@ void ForeignSessionsSuggestionsProvider::FetchSuggestionImage(
       FROM_HERE, base::Bind(callback, gfx::Image()));
 }
 
+void ForeignSessionsSuggestionsProvider::FetchMore(
+    const Category& category,
+    const FetchedMoreCallback& callback) {
+  NOTREACHED();
+}
+
 void ForeignSessionsSuggestionsProvider::ClearHistory(
     base::Time begin,
     base::Time end,