Implement Non-Closable Notification

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 <stddef.h>
 
 #include <string>
@@ skipping 35 matching lines @@
   bool never_timeout;
   base::Time timestamp;
   base::string16 context_message;
   gfx::Image image;
   gfx::Image small_image;
   std::vector<NotificationItem> items;
   int progress;
   std::vector<ButtonInfo> buttons;
   bool should_make_spoken_feedback_for_popup_updates;
   bool clickable;
+#if defined(OS_CHROMEOS)
+  // Flag if the notification is pinned. If true, the notification is pinned
+  // and user can't remove it.
+  bool pinned;
+#endif  // defined(OS_CHROMEOS)
   std::vector<int> vibration_pattern;
   bool renotify;
   bool silent;
 };
 
 class MESSAGE_CENTER_EXPORT Notification {
  public:
   Notification(NotificationType type,
                const std::string& id,
                const base::string16& title,
@@ skipping 140 matching lines @@
   bool never_timeout() const { return optional_fields_.never_timeout; }
   void set_never_timeout(bool never_timeout) {
     optional_fields_.never_timeout = never_timeout;
   }
 
   bool clickable() const { return optional_fields_.clickable; }
   void set_clickable(bool clickable) {
     optional_fields_.clickable = clickable;
   }
 
+  bool pinned() const {
+#if defined(OS_CHROMEOS)
+    return optional_fields_.pinned;
+#else
+    return false;
+#endif  // defined(OS_CHROMEOS)
+  }
+#if defined(OS_CHROMEOS)
+  void set_pinned(bool pinned) { optional_fields_.pinned = pinned; }
+#endif  // defined(OS_CHROMEOS)
+
   NotificationDelegate* delegate() const { return delegate_.get(); }
 
   const RichNotificationData& rich_notification_data() const {
     return optional_fields_;
   }
 
   // Set the priority to SYSTEM. The system priority user needs to call this
   // method explicitly, to avoid setting it accidentally.
   void SetSystemPriority();
 
@@ skipping 47 matching lines @@
   bool is_read_;  // True if this has been seen 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_