SharePoint 2013 -"Sign in as a different user" does not appear even after adding the control on welcome.ascx

I added following code to my Welcome.ascx (under controlTemplates in 15 hive ), I do not see the "Sign in as a different user" link. I have a custom master page. Is that stopping my control to display? How to enable this link with custom master page?

<SharePoint:MenuItemTemplate runat="server" ID="ID_LoginAsDifferentUser"
  Text="<%$Resources:wss,personalactions_loginasdifferentuser%>"
  Description="<%$Resources:wss,personalactions_loginasdifferentuserdescription%>"
  MenuGroupId="100"
  Sequence="100"
  UseShortId="true"
  />