| Index: ui/message_center/views/custom_notification_content_view_delegate.h
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| diff --git a/ui/message_center/views/custom_notification_content_view_delegate.h b/ui/message_center/views/custom_notification_content_view_delegate.h
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| index 3d84d00903ebdac1ddced6aa418122c089c60ac6..747e3de3f80f47194bdeb72a26832c7489c21c54 100644
 | 
| --- a/ui/message_center/views/custom_notification_content_view_delegate.h
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| +++ b/ui/message_center/views/custom_notification_content_view_delegate.h
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| @@ -22,6 +22,7 @@ class MESSAGE_CENTER_EXPORT CustomNotificationContentViewDelegate {
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|    virtual bool IsCloseButtonFocused() const = 0;
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|    virtual void RequestFocusOnCloseButton() = 0;
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|    virtual void UpdateControlButtonsVisibility() = 0;
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| +  virtual void OnSlideChanged() = 0;
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|  };
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|  
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|  // The struct to hold a view and CustomNotificationContentViewDelegate
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| 
 |