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

components/ntp_snippets/physical_web_pages/physical_web_page_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/physical_web_pages/physical_web_page_suggestions_provider.h"
 
 #include "base/bind.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/threading/thread_task_runner_handle.h"
+#include "grit/components_strings.h"
+#include "ui/base/l10n/l10n_util.h"
 #include "ui/gfx/image/image.h"
 
 namespace ntp_snippets {
 
 namespace {
 
 const size_t kMaxSuggestionsCount = 10;
 
 }  // namespace
 
@@ skipping 37 matching lines @@
                                std::move(suggestions));
 }
 
 CategoryStatus PhysicalWebPageSuggestionsProvider::GetCategoryStatus(
     Category category) {
   return category_status_;
 }
 
 CategoryInfo PhysicalWebPageSuggestionsProvider::GetCategoryInfo(
     Category category) {
-  // TODO(vitaliii): Use a proper string once it's been agreed on.
-  return CategoryInfo(base::ASCIIToUTF16("Physical web pages"),
-                      ContentSuggestionsCardLayout::MINIMAL_CARD,
-                      /* has_more_button */ true,
-                      /* show_if_empty */ false);
+  // TODO(vitaliii): Use the proper strings once they've been agreed on.
+  return CategoryInfo(
+      base::ASCIIToUTF16("Physical web pages"),
+      ContentSuggestionsCardLayout::MINIMAL_CARD,
+      /* has_more_button */ true,
+      /* show_if_empty */ false,
+      l10n_util::GetStringUTF16(IDS_NTP_SUGGESTIONS_SECTION_EMPTY));
 }
 
 void PhysicalWebPageSuggestionsProvider::DismissSuggestion(
     const ContentSuggestion::ID& suggestion_id) {
   // TODO(vitaliii): Implement this and then
   // ClearDismissedSuggestionsForDebugging.
 }
 
 void PhysicalWebPageSuggestionsProvider::FetchSuggestionImage(
     const ContentSuggestion::ID& suggestion_id,
@@ skipping 32 matching lines @@
 
 // Updates the |category_status_| and notifies the |observer_|, if necessary.
 void PhysicalWebPageSuggestionsProvider::NotifyStatusChanged(
     CategoryStatus new_status) {
   if (category_status_ == new_status) return;
   category_status_ = new_status;
   observer()->OnCategoryStatusChanged(this, provided_category_, new_status);
 }
 
 }  // namespace ntp_snippets