Initial Implementation of Download Notification

chrome/browser/download/notification/download_notification_manager.h

Index: chrome/browser/download/notification/download_notification_manager.h
diff --git a/chrome/browser/download/notification/download_notification_manager.h b/chrome/browser/download/notification/download_notification_manager.h
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+// Copyright 2015 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_DOWNLOAD_NOTIFICATION_DOWNLOAD_NOTIFICATION_MANAGER_H_
+#define CHROME_BROWSER_DOWNLOAD_NOTIFICATION_DOWNLOAD_NOTIFICATION_MANAGER_H_
+
+#include <set>
+
+#include "chrome/browser/download/download_ui_controller.h"
+#include "chrome/browser/download/notification/download_notification_item.h"
+#include "chrome/browser/profiles/profile.h"
+
+class Profile;
+
+class DownloadNotificationManager : public DownloadUIController::Delegate,
+                                    public DownloadNotificationItem::Delegate {
+ public:
+  explicit DownloadNotificationManager(Profile* profile);
+  ~DownloadNotificationManager() override;
+
+  // DownloadUIController::Delegate:
+  void OnNewDownloadReady(content::DownloadItem* item) override;
+
+  // DownloadNotificationItem::Delegate:
+  void OnDownloadStarted(DownloadNotificationItem* item) override;
+  void OnDownloadStopped(DownloadNotificationItem* item) override;
+  void OnDownloadRemoved(DownloadNotificationItem* item) override;
+
+ private:
+  std::set<DownloadNotificationItem*> downloading_items_;
+  std::set<DownloadNotificationItem*> items_;
+
+  STLElementDeleter<std::set<DownloadNotificationItem*>> items_deleter_;
+};
+
+#endif  // CHROME_BROWSER_DOWNLOAD_NOTIFICATION_DOWNLOAD_NOTIFICATION_MANAGER_H_