Expose notification info in ContentSuggestion

components/ntp_snippets/content_suggestion.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_CONTENT_SUGGESTION_H_
 #define COMPONENTS_NTP_SNIPPETS_CONTENT_SUGGESTION_H_
 
 #include <memory>
 #include <string>
 
@@ skipping 25 matching lines @@
 };
 
 // Contains additional data which is only available for recent tab suggestions.
 struct RecentTabSuggestionExtra {
   // Corresponding tab identifier.
   std::string tab_id;
   // Underlying offline page identifier.
   int64_t offline_page_id = 0;
 };
 
+// Contains additional data for notification-worthy suggestions.
+struct NotificationExtra {
+  // Deadline for showing notification. If the deadline is past, the
+  // notification is no longer fresh and no notification should be sent. If the
+  // deadline passes while a notification is up, it should be canceled.
+  base::Time deadline;
+};
+
 // A content suggestion for the new tab page, which can be an article or an
 // offline page, for example.
 class ContentSuggestion {
  public:
   class ID {
    public:
     ID(Category category, const std::string& id_within_category)
         : category_(category), id_within_category_(id_within_category) {}
 
     Category category() const { return category_; }
@@ skipping 70 matching lines @@
       std::unique_ptr<DownloadSuggestionExtra> download_suggestion_extra);
 
   // Extra information for recent tab suggestions. Only available for
   // KnownCategories::RECENT_TABS suggestions.
   RecentTabSuggestionExtra* recent_tab_suggestion_extra() const {
     return recent_tab_suggestion_extra_.get();
   }
   void set_recent_tab_suggestion_extra(
       std::unique_ptr<RecentTabSuggestionExtra> recent_tab_suggestion_extra);
 
+  // Extra information for notifications. When absent, no notification should be
+  // sent for this suggestion. When present, a notification should be sent,
+  // unless other factors disallow it (examples: the extra parameters say to;
+  // notifications are disabled; Chrome is in the foreground).
+  NotificationExtra* notification_extra() const {
+    return notification_extra_.get();
+  }
+  void set_notification_extra(
+      std::unique_ptr<NotificationExtra> notification_extra);
+
  private:
   ID id_;
   GURL url_;
   base::string16 title_;
   base::string16 snippet_text_;
   base::Time publish_date_;
   base::string16 publisher_name_;
   float score_;
   std::unique_ptr<DownloadSuggestionExtra> download_suggestion_extra_;
   std::unique_ptr<RecentTabSuggestionExtra> recent_tab_suggestion_extra_;
+  std::unique_ptr<NotificationExtra> notification_extra_;
 
   DISALLOW_COPY_AND_ASSIGN(ContentSuggestion);
 };
 
 std::ostream& operator<<(std::ostream& os, const ContentSuggestion::ID& id);
 
 }  // namespace ntp_snippets
 
 #endif  // COMPONENTS_NTP_SNIPPETS_CONTENT_SUGGESTION_H_