Store serialized notification data as an Intent extra on Android.

chrome/browser/notifications/persistent_notification_delegate.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_PERSISTENT_NOTIFICATION_DELEGATE_H_
 #define CHROME_BROWSER_NOTIFICATIONS_PERSISTENT_NOTIFICATION_DELEGATE_H_
 
 #include <string>
 
 #include "chrome/browser/notifications/notification_delegate.h"
 #include "content/public/common/platform_notification_data.h"
 #include "url/gurl.h"
 
 namespace content {
 class BrowserContext;
 }
 
 // Delegate responsible for listening to the click event on persistent
 // notifications, to forward them to the PlatformNotificationService so that
 // JavaScript events can be fired on the associated Service Worker.
 class PersistentNotificationDelegate : public NotificationDelegate {
  public:
   PersistentNotificationDelegate(
       content::BrowserContext* browser_context,
       int64 service_worker_registration_id,
       const GURL& origin,
       const content::PlatformNotificationData& notification_data);
 
+  int64 service_worker_registration_id() const {
+    return service_worker_registration_id_;
+  }
+
+  const content::PlatformNotificationData& notification_data() const {
+    return notification_data_;
+  }
+
   // NotificationDelegate implementation.
   void Display() override;
   void Close(bool by_user) override;
   void Click() override;
   std::string id() const override;
 
  protected:
   ~PersistentNotificationDelegate() override;
 
  private:
   content::BrowserContext* browser_context_;
   int64 service_worker_registration_id_;
   GURL origin_;
   content::PlatformNotificationData notification_data_;
 
   std::string id_;
 };
 
 #endif  // CHROME_BROWSER_NOTIFICATIONS_PERSISTENT_NOTIFICATION_DELEGATE_H_