[Offline pages] Downloads UI: Adding bridge for issuing notifications

chrome/browser/android/offline_pages/downloads/offline_page_notification_bridge.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_ANDROID_OFFLINE_PAGES_DOWNLOADS_OFFLINE_PAGE_NOTIFICATION_BRIDGE_H_
+#define CHROME_BROWSER_ANDROID_OFFLINE_PAGES_DOWNLOADS_OFFLINE_PAGE_NOTIFICATION_BRIDGE_H_
+
+#include <stdint.h>
+
+#include "base/android/jni_android.h"
+#include "base/macros.h"
+#include "components/offline_pages/downloads/offline_page_download_notifier.h"
+
+namespace offline_pages {
+namespace android {
+
+// Bridge for offline page related keyed services to issue download
+// notifications in Android.
+class OfflinePageNotificationBridge : public OfflinePageDownloadNotifier {
+ public:
+  ~OfflinePageNotificationBridge() override {}
+
+  void NotifyDownloadSuccessful(const DownloadUIItem& item) override;
+  void NotifyDownloadFailed(const DownloadUIItem& item) override;
+  void NotifyDownloadProgress(const DownloadUIItem& item) override;
+  void NotifyDownloadPaused(const DownloadUIItem& item) override;
+  void NotifyDownloadInterrupted(const DownloadUIItem& item) override;
+  void NotifyDownloadCanceled(const DownloadUIItem& item) override;
+};
+
+}  // namespace android
+}  // namespace offline_pages
+
+#endif  // CHROME_BROWSER_ANDROID_OFFLINE_PAGES_DOWNLOADS_OFFLINE_PAGE_NOTIFICATION_BRIDGE_H_