[NTP Snippets] Pass "no suggestions" message from the backend to the UI

components/ntp_snippets/bookmarks/bookmark_suggestions_provider.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/ntp_snippets/bookmarks/bookmark_suggestions_provider.h"
 
 #include <utility>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 117 matching lines @@
     Category category) {
   DCHECK_EQ(category, provided_category_);
   return category_status_;
 }
 
 CategoryInfo BookmarkSuggestionsProvider::GetCategoryInfo(Category category) {
   return CategoryInfo(
       l10n_util::GetStringUTF16(IDS_NTP_BOOKMARK_SUGGESTIONS_SECTION_HEADER),
       ContentSuggestionsCardLayout::MINIMAL_CARD,
       /*has_more_button=*/true,
-      /*show_if_empty=*/false);
+      /*show_if_empty=*/false,
+      l10n_util::GetStringUTF16(IDS_NTP_BOOKMARK_SUGGESTIONS_SECTION_EMPTY));
 }
 
 void BookmarkSuggestionsProvider::DismissSuggestion(
     const ContentSuggestion::ID& suggestion_id) {
   DCHECK(bookmark_model_->loaded());
   GURL url(suggestion_id.id_within_category());
   MarkBookmarksDismissed(bookmark_model_, url);
 }
 
 void BookmarkSuggestionsProvider::FetchSuggestionImage(
@@ skipping 154 matching lines @@
 
 void BookmarkSuggestionsProvider::NotifyStatusChanged(
     CategoryStatus new_status) {
   if (category_status_ == new_status)
     return;
   category_status_ = new_status;
   observer()->OnCategoryStatusChanged(this, provided_category_, new_status);
 }
 
 }  // namespace ntp_snippets