[Offline pages] Use the new policy bits

components/ntp_snippets/offline_pages/offline_page_suggestions_provider.h

 // 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.
 
 #ifndef COMPONENTS_NTP_SNIPPETS_OFFLINE_PAGES_OFFLINE_PAGE_SUGGESTIONS_PROVIDER_H_
 #define COMPONENTS_NTP_SNIPPETS_OFFLINE_PAGES_OFFLINE_PAGE_SUGGESTIONS_PROVIDER_H_
 
 #include <set>
 #include <string>
 #include <vector>
 
 #include "base/callback_forward.h"
 #include "components/ntp_snippets/category.h"
 #include "components/ntp_snippets/category_factory.h"
 #include "components/ntp_snippets/category_status.h"
 #include "components/ntp_snippets/content_suggestion.h"
 #include "components/ntp_snippets/content_suggestions_provider.h"
 #include "components/offline_pages/offline_page_model.h"
 #include "components/offline_pages/offline_page_types.h"
 
 class PrefRegistrySimple;
 class PrefService;
 
 namespace gfx {
 class Image;
 }
 
+namespace offline_pages {
+struct ClientId;
+}
+
 namespace ntp_snippets {
 
 // Provides content suggestions from the offline pages model.
 // Currently, those are only the pages that the user last navigated to in an
 // open tab and offlined bookmarks.
 class OfflinePageSuggestionsProvider
     : public ContentSuggestionsProvider,
       public offline_pages::OfflinePageModel::Observer {
  public:
   OfflinePageSuggestionsProvider(
@@ skipping 70 matching lines @@
   // for the given |category|.
   std::string GetDismissedPref(Category category) const;
 
   // Reads dismissed IDs for the given |category|.
   std::set<std::string> ReadDismissedIDsFromPrefs(Category category) const;
 
   // Writes |dismissed_ids| for the given |category|.
   void StoreDismissedIDsToPrefs(Category category,
                                 const std::set<std::string>& dismissed_ids);
 
+  // Determine if |client_id| is supported by downloads feature.
+  bool IsDownload(const offline_pages::ClientId& client_id);
+
+  // Determine if |client_id| is supported by recent tabs feature.
+  bool IsRecentTab(const offline_pages::ClientId& client_id);
+
   CategoryStatus recent_tabs_status_;
   CategoryStatus downloads_status_;
 
   offline_pages::OfflinePageModel* offline_page_model_;
 
   const Category recent_tabs_category_;
   const Category downloads_category_;
 
   PrefService* pref_service_;
 
   // Whether the Download Manager UI is enabled, in which case the More button
   // for the Downloads section can redirect there.
   const bool download_manager_ui_enabled_;
 
   DISALLOW_COPY_AND_ASSIGN(OfflinePageSuggestionsProvider);
 };
 
 }  // namespace ntp_snippets
 
 #endif  // COMPONENTS_NTP_SNIPPETS_OFFLINE_PAGES_OFFLINE_PAGE_SUGGESTIONS_PROVIDER_H_