Fixes the context menu for a notification.

ui/message_center/message_center_tray.h

Index: ui/message_center/message_center_tray.h
diff --git a/ui/message_center/message_center_tray.h b/ui/message_center/message_center_tray.h
index fed4eb1433711376aba9bd922a1df8efd472ef37..278eb2eb6dc35c348604d0bf0a999054cef3a0ad 100644
--- a/ui/message_center/message_center_tray.h
+++ b/ui/message_center/message_center_tray.h
@@ -6,9 +6,15 @@
 #define UI_MESSAGE_CENTER_MESSAGE_CENTER_TRAY_H_
 
 #include "base/observer_list.h"
+#include "base/strings/string16.h"
 #include "ui/message_center/message_center_export.h"
 #include "ui/message_center/message_center_observer.h"
 #include "ui/message_center/message_center_tray_delegate.h"
+#include "ui/message_center/notifier_settings.h"
+
+namespace ui {
+class MenuModel;
+}
 
 namespace message_center {
 
@@ -54,6 +60,11 @@ class MESSAGE_CENTER_EXPORT MessageCenterTray : public MessageCenterObserver {
   // Toggles the visibility of the settings view in the message center bubble.
   void ShowNotifierSettingsBubble();
 
+  // Creates a model for the context menu for a notification card.
+  scoped_ptr<ui::MenuModel> CreateNotificationMenuModel(
+      const NotifierId& notifier_id,
+      const base::string16& display_source);
+
   bool message_center_visible() { return message_center_visible_; }
   bool popups_visible() { return popups_visible_; }
   MessageCenterTrayDelegate* delegate() { return delegate_; }