Deprecate per notification type delegates.

chrome/browser/notifications/notification_object_proxy.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_OBJECT_PROXY_H_
-#define CHROME_BROWSER_NOTIFICATIONS_NOTIFICATION_OBJECT_PROXY_H_
-
-#include <memory>
-#include <string>
-
-#include "base/macros.h"
-#include "chrome/browser/notifications/web_notification_delegate.h"
-
-class GURL;
-
-namespace content {
-class BrowserContext;
-class DesktopNotificationDelegate;
-}
-
-// A NotificationObjectProxy stands in for the JavaScript Notification object
-// which corresponds to a notification toast on the desktop.  It can be signaled
-// when various events occur regarding the desktop notification, and the
-// attached JS listeners will be invoked in the renderer or worker process.
-class NotificationObjectProxy : public WebNotificationDelegate {
- public:
-  // Creates a Proxy object with the necessary callback information. The Proxy
-  // will take ownership of |delegate|.
-  NotificationObjectProxy(
-      content::BrowserContext* browser_context,
-      const std::string& notification_id,
-      const GURL& origin,
-      std::unique_ptr<content::DesktopNotificationDelegate> delegate);
-
-  // NotificationDelegate implementation.
-  void Display() override;
-  void Close(bool by_user) override;
-  void Click() override;
-  void ButtonClick(int button_index) override;
-
- protected:
-  ~NotificationObjectProxy() override;
-
- private:
-  std::unique_ptr<content::DesktopNotificationDelegate> delegate_;
-  bool displayed_;
-
-  DISALLOW_COPY_AND_ASSIGN(NotificationObjectProxy);
-};
-
-#endif  // CHROME_BROWSER_NOTIFICATIONS_NOTIFICATION_OBJECT_PROXY_H_