Route newly created notifications to notification provider API.

chrome/browser/notifications/notification_conversion_helper.h

+// Copyright 2014 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_CONVERSION_HELPER_H_
+#define CHROME_BROWSER_NOTIFICATIONS_NOTIFICATION_CONVERSION_HELPER_H_
+
+#include "chrome/browser/notifications/notification.h"
+#include "ui/message_center/notification_types.h"
+
+namespace extensions {
+namespace api {
+namespace notifications {
+struct NotificationOptions;
+struct NotificationBitmap;
+}  // namespace notifications
+}  // namespace api
+}  // namespace extensions
+
+namespace gfx {
+class Image;
+}
+
+class NotificationConversionHelper {

[dewittj, 2014/08/13 18:30:18]

please add a class comment

[liyanhou, 2014/08/13 20:28:57]

Done.

+ public:
+  // Converts Notification::Notification data to
+  // extensions::api::notifications::NotificationOptions.
+  static void NotificationToNotificationOptions(
+      const Notification& notification,
+      extensions::api::notifications::NotificationOptions* options);
+
+  // Converts gfx::Image (in ARGB format) type to
+  // extensions::api::notifications::NotificationBitmap type (RGBA).
+  static void GfxImageToNotificationBitmap(
+      const gfx::Image* gfx_image,
+      extensions::api::notifications::NotificationBitmap* return_image_args);
+
+  // Converts an extensions::api::notifications::NotificationBitmap type object
+  // with width, height, and data in RGBA format into an gfx::Image (ARGB).
+  static bool NotificationBitmapToGfxImage(
+      float max_scale,
+      const gfx::Size& target_size_dips,
+      extensions::api::notifications::NotificationBitmap* notification_bitmap,
+      gfx::Image* return_image);
+
+ private:
+  // Conversts message_center::NotificationType to string type used to convert
+  // to extensions::api::notifications::TemplateType
+  static std::string MapTypeToString(message_center::NotificationType type);
+};
+
+#endif  // CHROME_BROWSER_NOTIFICATIONS_NOTIFICATION_CONVERSION_HELPER_H_