[NTP::SectionOrder] Replace CategoryFactory with a category ranker.

components/ntp_snippets/sessions/foreign_sessions_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/sessions/foreign_sessions_suggestions_provider.h"
 
 #include <algorithm>
 #include <map>
 #include <tuple>
 #include <utility>
 
 #include "base/strings/string_piece.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/time/time.h"
-#include "components/ntp_snippets/category_factory.h"
+#include "components/ntp_snippets/category.h"
 #include "components/ntp_snippets/category_info.h"
 #include "components/ntp_snippets/content_suggestion.h"
 #include "components/ntp_snippets/features.h"
 #include "components/ntp_snippets/pref_names.h"
 #include "components/ntp_snippets/pref_util.h"
 #include "components/prefs/pref_registry_simple.h"
 #include "components/prefs/pref_service.h"
 #include "components/sessions/core/session_types.h"
 #include "components/sync_sessions/synced_session.h"
 #include "components/variations/variations_associated_data.h"
@@ skipping 128 matching lines @@
     // value, so always use SessionTab::timestamp() instead.
     // TODO(skym): It might be better if we sorted by recency of session, and
     // only then by recency of the tab. Right now this causes a single
     // device's tabs to be interleaved with another devices' tabs.
     return tab->timestamp > other.tab->timestamp;
   }
 };
 
 ForeignSessionsSuggestionsProvider::ForeignSessionsSuggestionsProvider(
     ContentSuggestionsProvider::Observer* observer,
-    CategoryFactory* category_factory,
     std::unique_ptr<ForeignSessionsProvider> foreign_sessions_provider,
     PrefService* pref_service)
-    : ContentSuggestionsProvider(observer, category_factory),
+    : ContentSuggestionsProvider(observer),
       category_status_(CategoryStatus::INITIALIZING),
       provided_category_(
-          category_factory->FromKnownCategory(KnownCategories::FOREIGN_TABS)),
+          Category::FromKnownCategory(KnownCategories::FOREIGN_TABS)),
       foreign_sessions_provider_(std::move(foreign_sessions_provider)),
       pref_service_(pref_service) {
   foreign_sessions_provider_->SubscribeForForeignTabChange(
       base::Bind(&ForeignSessionsSuggestionsProvider::OnForeignTabChange,
                  base::Unretained(this)));
 
   // If sync is already initialzed, try suggesting now, though this is unlikely.
   OnForeignTabChange();
 }
 
@@ skipping 219 matching lines @@
                                data.navigation->virtual_url().spec(),
                                data.navigation->virtual_url());
   suggestion.set_title(data.navigation->title());
   suggestion.set_publish_date(data.tab->timestamp);
   suggestion.set_publisher_name(
       base::UTF8ToUTF16(data.navigation->virtual_url().host()));
   return suggestion;
 }
 
 }  // namespace ntp_snippets