[WebAPKs] Plumb service worker scope to notifications

chrome/browser/notifications/notification.h

 // Copyright (c) 2012 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_H_
 #define CHROME_BROWSER_NOTIFICATIONS_NOTIFICATION_H_
 
 #include <memory>
 #include <string>
 
@@ skipping 25 matching lines @@
 
   Notification(const std::string& id, const Notification& notification);
 
   Notification(const Notification& notification);
   ~Notification() override;
   Notification& operator=(const Notification& notification);
 
   // A unique identifier used to update (replace) or remove a notification.
   const std::string& tag() const { return tag_; }
 
+  const GURL& scope_url() const { return scope_url_; }
+  void set_scope_url(const GURL& scope_url) { scope_url_ = scope_url; }
+
   // Id of the delegate embedded inside this instance.
   std::string delegate_id() const { return delegate()->id(); }
 
   NotificationDelegate* delegate() const { return delegate_.get(); }
 
  private:
   // The user-supplied tag for the notification.
   std::string tag_;
 
+  // The service worker scope if the notification was displayed by a service
+  // worker.
+  GURL scope_url_;
+
   // A proxy object that allows access back to the JavaScript object that
   // represents the notification, for firing events.
   scoped_refptr<NotificationDelegate> delegate_;
 };
 
 #endif  // CHROME_BROWSER_NOTIFICATIONS_NOTIFICATION_H_