Support action button to fetch more content suggestions

components/ntp_snippets/offline_pages/offline_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/offline_pages/offline_page_suggestions_provider.h"
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 39 matching lines @@
 CategoryStatus OfflinePageSuggestionsProvider::GetCategoryStatus(
     Category category) {
   DCHECK_EQ(category, provided_category_);
   return category_status_;
 }
 
 CategoryInfo OfflinePageSuggestionsProvider::GetCategoryInfo(
     Category category) {
   // TODO(pke): Use the proper string once it's agreed on.
   return CategoryInfo(base::ASCIIToUTF16("Offline pages"),
-                      ContentSuggestionsCardLayout::MINIMAL_CARD);
+                      ContentSuggestionsCardLayout::MINIMAL_CARD, false);
+}
+
+void OfflinePageSuggestionsProvider::FetchMoreSuggestions(Category category) {
+  // Ignored.
 }
 
 void OfflinePageSuggestionsProvider::DismissSuggestion(
     const std::string& suggestion_id) {
   // TODO(pke): Implement some "dont show on NTP anymore" behaviour,
   // then also implement ClearDismissedSuggestionsForDebugging.
 }
 
 void OfflinePageSuggestionsProvider::FetchSuggestionImage(
     const std::string& suggestion_id,
@@ skipping 79 matching lines @@
 void OfflinePageSuggestionsProvider::NotifyStatusChanged(
     CategoryStatus new_status) {
   if (category_status_ == new_status)
     return;
   category_status_ = new_status;
 
   observer()->OnCategoryStatusChanged(this, provided_category_, new_status);
 }
 
 }  // namespace ntp_snippets