Create ReadingListSuggestionsProvider

components/ntp_snippets/category_rankers/constant_category_ranker.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/category_rankers/constant_category_ranker.h"
 
 #include "base/stl_util.h"
 #include "components/ntp_snippets/features.h"
 
 namespace ntp_snippets {
@@ skipping 55 matching lines @@
 }
 
 // static
 std::vector<KnownCategories>
 ConstantCategoryRanker::GetKnownCategoriesDefaultOrder() {
   std::vector<KnownCategories> categories;
   CategoryOrderChoice choice = GetSelectedCategoryOrder();
   switch (choice) {
     case CategoryOrderChoice::GENERAL:
       categories.push_back(KnownCategories::PHYSICAL_WEB_PAGES);
+      categories.push_back(KnownCategories::READING_LIST);
       categories.push_back(KnownCategories::DOWNLOADS);
       categories.push_back(KnownCategories::RECENT_TABS);
       categories.push_back(KnownCategories::FOREIGN_TABS);
       categories.push_back(KnownCategories::BOOKMARKS);
       categories.push_back(KnownCategories::ARTICLES);
       break;
     case CategoryOrderChoice::EMERGING_MARKETS_ORIENTED:
       categories.push_back(KnownCategories::ARTICLES);
+      categories.push_back(KnownCategories::READING_LIST);
       categories.push_back(KnownCategories::DOWNLOADS);
       categories.push_back(KnownCategories::BOOKMARKS);
 
       categories.push_back(KnownCategories::PHYSICAL_WEB_PAGES);
       categories.push_back(KnownCategories::RECENT_TABS);
       categories.push_back(KnownCategories::FOREIGN_TABS);
       break;
   }
 
   static_assert(
-      static_cast<size_t>(KnownCategories::LOCAL_CATEGORIES_COUNT) == 5,
+      static_cast<size_t>(KnownCategories::LOCAL_CATEGORIES_COUNT) == 6,
       "All local KnownCategories must be present in all orders.");
 
   // Other remote categories will be ordered after these depending on when
   // providers notify us about them using AppendCategoryIfNecessary.
   return categories;
 }
 
 void ConstantCategoryRanker::AppendKnownCategory(
     KnownCategories known_category) {
   Category category = Category::FromKnownCategory(known_category);
   DCHECK(!base::ContainsValue(ordered_categories_, category));
   ordered_categories_.push_back(category);
 }
 
 }  // namespace ntp_snippets