Retrive displayed notifications asynchronously

chrome/browser/notifications/alert_dispatcher_mac.h

Index: chrome/browser/notifications/alert_dispatcher_mac.h
diff --git a/chrome/browser/notifications/alert_dispatcher_mac.h b/chrome/browser/notifications/alert_dispatcher_mac.h
index ee2744c29e183d68a1c4ee6e462dbfa76bed14fd..10b1d063ec8e8288c87fad29d34a3b524f74eba2 100644
--- a/chrome/browser/notifications/alert_dispatcher_mac.h
+++ b/chrome/browser/notifications/alert_dispatcher_mac.h
@@ -1,3 +1,4 @@
+
 // 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.
@@ -7,6 +8,8 @@
 
 #import <Foundation/Foundation.h>
 
+#include "chrome/browser/notifications/notification_common.h"
+
 // Interface to communicate with the Alert XPC service.
 @protocol AlertDispatcher<NSObject>
 
@@ -20,6 +23,12 @@
 // Close all notifications.
 - (void)closeAllNotifications;
 
+// Get currently displayed notifications.
+- (void)
+getDisplayedAlertsForProfileId:(NSString*)profileId
+        withLocalNotifications:(NSArray*)localNotifications
+                      callback:(NotificationCommon::NotificationResultCallback)
+                                   callback;
 @end
 
 #endif  // CHROME_BROWSER_NOTIFICATIONS_ALERT_DISPATCHER_MAC_H_