Support creating progress bar notification for Windows

ui/message_center/notification.h

 // Copyright (c) 2013 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 UI_MESSAGE_CENTER_NOTIFICATION_H_
 #define UI_MESSAGE_CENTER_NOTIFICATION_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 26 matching lines @@
   RichNotificationData();
   RichNotificationData(const RichNotificationData& other);
   ~RichNotificationData();
 
   int priority;
   bool never_timeout;
   base::Time timestamp;
   string16 expanded_message;
   gfx::Image image;
   std::vector<NotificationItem> items;
+  int progress;
   std::vector<ButtonInfo> buttons;
 };
 
 class MESSAGE_CENTER_EXPORT Notification {
  public:
   Notification(NotificationType type,
                const std::string& id,
                const string16& title,
                const string16& message,
                const gfx::Image& icon,
@@ skipping 24 matching lines @@
 
   // Begin unpacked values from optional_fields.
   int priority() const { return optional_fields_.priority; }
   base::Time timestamp() const { return optional_fields_.timestamp; }
   const string16& expanded_message() const {
     return optional_fields_.expanded_message;
   }
   const std::vector<NotificationItem>& items() const {
     return optional_fields_.items;
   }
+  int progress() const { return optional_fields_.progress; }
   // End unpacked values.
 
   // Images fetched asynchronously.
   const gfx::Image& icon() const { return icon_; }
   void set_icon(const gfx::Image& icon) { icon_ = icon; }
 
   const gfx::Image& image() const { return optional_fields_.image; }
   void set_image(const gfx::Image& image) { optional_fields_.image = image; }
 
   // Buttons, with icons fetched asynchronously.
@@ skipping 67 matching lines @@
   bool is_expanded_;  // True if this has been expanded in the message center.
 
   // A proxy object that allows access back to the JavaScript object that
   // represents the notification, for firing events.
   scoped_refptr<NotificationDelegate> delegate_;
 };
 
 }  // namespace message_center
 
 #endif  // UI_MESSAGE_CENTER_NOTIFICATION_H_