Show message center on lock screen

ui/message_center/views/message_center_view.h

Index: ui/message_center/views/message_center_view.h
diff --git a/ui/message_center/views/message_center_view.h b/ui/message_center/views/message_center_view.h
index 9a37ade9987b5ba9773f0264c67d9b650415a9d1..93bedd5c17851d08afdc81297f5cf93139588a2e 100644
--- a/ui/message_center/views/message_center_view.h
+++ b/ui/message_center/views/message_center_view.h
@@ -73,6 +73,7 @@ class MESSAGE_CENTER_EXPORT MessageCenterView : public views::View,
   void OnNotificationAdded(const std::string& id) override;
   void OnNotificationRemoved(const std::string& id, bool by_user) override;
   void OnNotificationUpdated(const std::string& id) override;
+  void OnLockedStateChanged(bool locked) override;
 
   // Overridden from MessageCenterController:
   void ClickOnNotification(const std::string& notification_id) override;
@@ -96,6 +97,8 @@ class MESSAGE_CENTER_EXPORT MessageCenterView : public views::View,
 
   enum class Mode { NOTIFICATIONS, SETTINGS, BUTTONS_ONLY };
 
+  static bool disable_animation_for_testing;
+
   void AddNotificationAt(const Notification& notification, int index);
   base::string16 GetButtonBarTitle() const;
   void Update(bool animate);
@@ -137,6 +140,7 @@ class MESSAGE_CENTER_EXPORT MessageCenterView : public views::View,
   bool is_closing_;
 
   bool is_clearing_ = false;
+  bool is_locked_ = false;
 
   // Current view mode. During animation, it is the target mode.
   Mode mode_ = Mode::BUTTONS_ONLY;