[Mac] Add XPC alerts to GetDisplayedNotifications

chrome/browser/notifications/stub_alert_dispatcher_mac.h

Index: chrome/browser/notifications/stub_alert_dispatcher_mac.h
diff --git a/chrome/browser/notifications/stub_alert_dispatcher_mac.h b/chrome/browser/notifications/stub_alert_dispatcher_mac.h
index 29af5a3fc4ef8bbc348247f89bcd8e96d437d69c..f824399d990e4121447da59d9df3d63ac36c238c 100644
--- a/chrome/browser/notifications/stub_alert_dispatcher_mac.h
+++ b/chrome/browser/notifications/stub_alert_dispatcher_mac.h
@@ -7,7 +7,9 @@
 
 #import <Foundation/Foundation.h>
 
-#import "chrome/browser/notifications/alert_dispatcher_mac.h"
+#include <string>
+
+#include "chrome/browser/notifications/alert_dispatcher_mac.h"
 
 @interface StubAlertDispatcher : NSObject<AlertDispatcher>
 
@@ -18,6 +20,12 @@
 
 - (void)closeAllNotifications;
 
+- (void)
+getDisplayedAlertsForProfileId:(NSString*)profileId
+                     incognito:(BOOL)incognito
+            notificationCenter:(NSUserNotificationCenter*)notificationCenter
+                      callback:(GetDisplayedNotificationsCallback)callback;
+
 // Stub specific methods.
 - (NSArray*)alerts;