Support creating progress bar notification for Windows

ui/message_center/notification.cc

 // 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.
 
 #include "ui/message_center/notification.h"
 
 #include "base/logging.h"
 #include "ui/message_center/notification_types.h"
 
 namespace {
 unsigned g_next_serial_number_ = 0;
 }
 
 namespace message_center {
 
 NotificationItem::NotificationItem(const string16& title,
                                    const string16& message)
  : title(title),
    message(message) {
 }
 
 ButtonInfo::ButtonInfo(const string16& title)
  : title(title) {
 }
 
 RichNotificationData::RichNotificationData()
     : priority(DEFAULT_PRIORITY),
       never_timeout(false),
-      timestamp(base::Time::Now()) {}
+      timestamp(base::Time::Now()),
+      progress(0) {}
 
 RichNotificationData::RichNotificationData(const RichNotificationData& other)
     : priority(other.priority),
       never_timeout(other.never_timeout),
       timestamp(other.timestamp),
       expanded_message(other.expanded_message),
       image(other.image),
       items(other.items),
+      progress(other.progress),
       buttons(other.buttons) {}
 
 RichNotificationData::~RichNotificationData() {}
 
 Notification::Notification(NotificationType type,
                            const std::string& id,
                            const string16& title,
                            const string16& message,
                            const gfx::Image& icon,
                            const string16& display_source,
@@ skipping 60 matching lines @@
     return;
   optional_fields_.buttons[index].icon = icon;
 }
 
 void Notification::SetSystemPriority() {
   optional_fields_.priority = SYSTEM_PRIORITY;
   optional_fields_.never_timeout = true;
 }
 
 }  // namespace message_center