Linkedin Login from an Iframe (I know domains does not allow rendering in iframes)

I have been implementing a Iframe application in my recent project. I am using social media logins in the iframes. As I know that you cannot open any site on the iframe as there would permission access problem. For facebook i have found a way. When I click the Facebook button it opens a new browser window and not tab this is not in the iframe and I can successfully login and I can redirect to my iframe as I am using sdk for facebook. But for LinkedIn I don't have any sdk as they have deprecated.

Any leads would be appreciated?