Add NotificationDisplayServiceProxy

chrome/browser/notifications/notification_display_service_proxy.h

Index: chrome/browser/notifications/notification_display_service_proxy.h
diff --git a/chrome/browser/notifications/notification_display_service_proxy.h b/chrome/browser/notifications/notification_display_service_proxy.h
new file mode 100644
index 0000000000000000000000000000000000000000..2e33830bc7afa7eb150e37ae5ada2d90679c3964
--- /dev/null
+++ b/chrome/browser/notifications/notification_display_service_proxy.h
@@ -0,0 +1,53 @@
+// 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_NOTIFICATIONS_NOTIFICATION_DISPLAY_SERVICE_PROXY_H_
+#define CHROME_BROWSER_NOTIFICATIONS_NOTIFICATION_DISPLAY_SERVICE_PROXY_H_
+
+#include <queue>
+
+#include "chrome/browser/notifications/notification_display_service.h"
+
+class MessageCenterDisplayService;
+class NativeNotificationDisplayService;
+
+class NotificationDisplayServiceProxy : public NotificationDisplayService {
+ public:
+  explicit NotificationDisplayServiceProxy(Profile* profile);
+
+  ~NotificationDisplayServiceProxy() override;
+
+  // NotificationDisplayService:
+  void Display(NotificationCommon::Type notification_type,
+               const std::string& notification_id,
+               const Notification& notification) override;
+  void Close(NotificationCommon::Type notification_type,
+             const std::string& notification_id) override;
+  void GetDisplayed(const DisplayedNotificationsCallback& callback) override;
+
+  NativeNotificationDisplayService* native_notification_display_service() {
+    return native_notification_display_service_.get();
+  }
+
+ private:
+  NotificationDisplayService* GetNotificationDisplayService() const;
+
+  void OnNotificationPlatformBridgeInitialized(bool success);
+
+  // Takes ownership of |action|.
+  void RunAction(base::Callback<void(NotificationDisplayService*)> action);
+
+  Profile* profile_;
+
+  std::queue<base::Callback<void(NotificationDisplayService*)>> actions_;
+
+  std::unique_ptr<NativeNotificationDisplayService>
+      native_notification_display_service_;
+
+  std::unique_ptr<MessageCenterDisplayService> message_center_display_service_;
+
+  DISALLOW_COPY_AND_ASSIGN(NotificationDisplayServiceProxy);
+};
+
+#endif  // CHROME_BROWSER_NOTIFICATIONS_NOTIFICATION_DISPLAY_SERVICE_PROXY_H_