Introduce a new API to handle native notification clicks

chrome/browser/ui/cocoa/notifications/notification_builder_mac.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 CHROME_BROWSER_UI_COCOA_NOTIFICATIONS_NOTIFICATION_BUILDER_MAC_H_
 #define CHROME_BROWSER_UI_COCOA_NOTIFICATIONS_NOTIFICATION_BUILDER_MAC_H_
 
 #import <Foundation/Foundation.h>
 
 #include "base/mac/scoped_nsobject.h"
@@ skipping 36 matching lines @@
 - (void)setSubTitle:(NSString*)subTitle;
 - (void)setContextMessage:(NSString*)contextMessage;
 - (void)setIcon:(NSImage*)icon;
 - (void)setButtons:(NSString*)primaryButton
     secondaryButton:(NSString*)secondaryButton;
 - (void)setTag:(NSString*)tag;
 - (void)setOrigin:(NSString*)origin;
 - (void)setNotificationId:(NSString*)notificationId;
 - (void)setProfileId:(NSString*)profileId;
 - (void)setIncognito:(BOOL)incognito;
+- (void)setNotificationType:(NSNumber*)notificationType;
 
 // Returns a notification ready to be displayed out of the provided
 // |notificationData|.
 - (NSUserNotification*)buildUserNotification;
 
 // Returns a representation of a notification that can be serialized.
 // Another instance of NotificationBuilder can read this directly and generate
 // a notification out of it via the |buildbuildUserNotification| method.
 - (NSDictionary*)buildDictionary;
 
 @end
 
 #endif  // CHROME_BROWSER_UI_COCOA_NOTIFICATIONS_NOTIFICATION_BUILDER_MAC_H_