Migrate extension notifications to the new NotificationDisplayService

chrome/browser/extensions/api/notifications/extension_notification_handler.h

Index: chrome/browser/extensions/api/notifications/extension_notification_handler.h
diff --git a/chrome/browser/extensions/api/notifications/extension_notification_handler.h b/chrome/browser/extensions/api/notifications/extension_notification_handler.h
new file mode 100644
index 0000000000000000000000000000000000000000..7041755ff6d78671bf4f82f1cca87724d3e7806e
--- /dev/null
+++ b/chrome/browser/extensions/api/notifications/extension_notification_handler.h
@@ -0,0 +1,36 @@
+// Copyright 2017 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_EXTENSIONS_API_NOTIFICATIONS_EXTENSION_NOTIFICATION_HANDLER_H_
+#define CHROME_BROWSER_EXTENSIONS_API_NOTIFICATIONS_EXTENSION_NOTIFICATION_HANDLER_H_
+
+#include "base/macros.h"
+#include "chrome/browser/notifications/notification_handler.h"
+
+// Handler for notifications shown by extensions. Will be created and owned by
+// the NotificationDisplayService.
+class ExtensionNotificationHandler : public NotificationHandler {
+ public:
+  ExtensionNotificationHandler();
+  ~ExtensionNotificationHandler() override;
+
+  // NotificationHandler implementation.
+  void OnClose(Profile* profile,
+               const std::string& origin,
+               const std::string& notification_id,
+               bool by_user) override;
+  void OnClick(Profile* profile,
+               const std::string& origin,
+               const std::string& notification_id,
+               int action_index,
+               const base::NullableString16& reply) override;
+  void OpenSettings(Profile* profile) override;
+  void RegisterNotification(const std::string& notification_id,
+                            NotificationDelegate* delegate) override;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ExtensionNotificationHandler);
+};
+
+#endif  // CHROME_BROWSER_EXTENSIONS_API_NOTIFICATIONS_EXTENSION_NOTIFICATION_HANDLER_H_