Abstract notification clicks in its own dictionary

chrome/browser/ui/cocoa/notifications/notification_response_builder_mac.h

Index: chrome/browser/ui/cocoa/notifications/notification_response_builder_mac.h
diff --git a/chrome/browser/ui/cocoa/notifications/notification_response_builder_mac.h b/chrome/browser/ui/cocoa/notifications/notification_response_builder_mac.h
new file mode 100644
index 0000000000000000000000000000000000000000..4ed8bc38bf7f21618a80e38a5450271821038acc
--- /dev/null
+++ b/chrome/browser/ui/cocoa/notifications/notification_response_builder_mac.h
@@ -0,0 +1,20 @@
+// 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_RESPONSE_BUILDER_MAC_H_
+#define CHROME_BROWSER_UI_COCOA_NOTIFICATIONS_NOTIFICATION_RESPONSE_BUILDER_MAC_H_
+
+#import <Foundation/Foundation.h>
+
+@class NSUserNotification;
+
+// Provides a marshallable way for storing the information related to a
+// notification response action, clicking on it, clicking on a button etc.
+@interface NotificationResponseBuilder : NSObject
+
++ (NSDictionary*)buildDictionary:(NSUserNotification*)notification;
+
+@end
+
+#endif  // CHROME_BROWSER_UI_COCOA_NOTIFICATIONS_NOTIFICATION_RESPONSE_BUILDER_MAC_H_