Android Notifications should be closable without a delegate.

chrome/browser/notifications/notification_ui_manager_android.h

 // Copyright 2014 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_UI_MANAGER_ANDROID_H_
 #define CHROME_BROWSER_NOTIFICATIONS_NOTIFICATION_UI_MANAGER_ANDROID_H_
 
 #include <jni.h>
 #include <map>
 #include <set>
 #include <string>
 
 #include "base/android/scoped_java_ref.h"
 #include "chrome/browser/notifications/notification_ui_manager.h"
 
 class ProfileNotification;
 
 // Implementation of the Notification UI Manager for Android, which defers to
 // the Android framework for displaying notifications.
 class NotificationUIManagerAndroid : public NotificationUIManager {
  public:
   NotificationUIManagerAndroid();
   ~NotificationUIManagerAndroid() override;
 
   // Called by the Java implementation when a notification has been clicked on.
   bool OnNotificationClicked(JNIEnv* env,
                              jobject java_object,
                              jstring notification_id,
+                             jint platform_id,
                              jbyteArray serialized_notification_data);
 
   // Called by the Java implementation when a notification has been closed.
   bool OnNotificationClosed(JNIEnv* env,
                             jobject java_object,
                             jstring notification_id);
 
   // NotificationUIManager implementation;
   void Add(const Notification& notification, Profile* profile) override;
   bool Update(const Notification& notification,
@@ skipping 29 matching lines @@
 
   // Map from notification id to the associated platform Id.
   std::map<std::string, int> platform_notifications_;
 
   base::android::ScopedJavaGlobalRef<jobject> java_object_;
 
   DISALLOW_COPY_AND_ASSIGN(NotificationUIManagerAndroid);
 };
 
 #endif  // CHROME_BROWSER_NOTIFICATIONS_NOTIFICATION_UI_MANAGER_ANDROID_H_