Nuke NotificationUIManager from PlatformNotificationServiceImpl

chrome/browser/notifications/notification_display_service.h

+// Copyright 2016 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_H_
+#define CHROME_BROWSER_NOTIFICATIONS_NOTIFICATION_DISPLAY_SERVICE_H_
+
+#include <set>
+#include <string>
+#include "base/macros.h"
+#include "components/keyed_service/core/keyed_service.h"
+
+class Notification;
+class NotificationBridge;
+class Profile;
+
+// Profile-bound service that enables notifications to be displayed and
+// interacted with on the user's screen, orthogonal of whether this
+// functionality is provided by the browser or by the operating system. An
+// instance can be retrieved through the NotificationDisplayServiceFactory.
+//
+// TODO(peter): Add a NotificationHandler mechanism for registering listeners.
+// TODO(miguelg): Remove the SupportsNotificationCenter method.
+class NotificationDisplayService : public KeyedService {
+ public:
+  NotificationDisplayService() {}
+  ~NotificationDisplayService() override {}
+
+  // Displays the |notification| identified by |notification_id|.
+  virtual void Display(const std::string& notification_id,
+                       const Notification& notification) = 0;
+
+  // Closes the notification identified by |notification_id|.
+  virtual void Close(const std::string& notification_id) = 0;
+
+  // Returns whether the implementation can retrieve a list of currently visible
+  // notifications and stores them in |*notification_ids| when possible.
+  virtual bool GetDisplayed(std::set<std::string>* notifications) const = 0;
+
+  // Temporary method while we finish the refactor. Returns whether there is
+  // a native notification center backing up notifications.
+  virtual bool SupportsNotificationCenter() const = 0;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(NotificationDisplayService);
+};
+
+#endif  // CHROME_BROWSER_NOTIFICATIONS_NOTIFICATION_DISPLAY_SERVICE_H_