Implement native web notifications for mac

chrome/browser/notifications/notification_test_util.h

 // Copyright (c) 2012 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 CHROME_BROWSER_NOTIFICATIONS_NOTIFICATION_TEST_UTIL_H_
 #define CHROME_BROWSER_NOTIFICATIONS_NOTIFICATION_TEST_UTIL_H_
 
 #include <set>
 #include <string>
 #include <utility>
@@ skipping 45 matching lines @@
                                ProfileID profile_id) const override;
   bool CancelById(const std::string& delegate_id,
                   ProfileID profile_id) override;
   std::set<std::string> GetAllIdsByProfileAndSourceOrigin(
       ProfileID profile_id,
       const GURL& source) override;
   std::set<std::string> GetAllIdsByProfile(ProfileID profile_id) override;
   bool CancelAllBySourceOrigin(const GURL& source_origin) override;
   bool CancelAllByProfile(ProfileID profile_id) override;
   void CancelAll() override;
+  bool AcceptNativeNotifications() override;
 
  private:
   using NotificationPair = std::pair<Notification, ProfileID>;
   std::vector<NotificationPair> notifications_;
 
   base::Closure notification_added_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(StubNotificationUIManager);
 };
 
 #endif  // CHROME_BROWSER_NOTIFICATIONS_NOTIFICATION_TEST_UTIL_H_