Facebook new feature :-Insert Images in chat

Facebook recently added a feature using which anyone could use profile image of any person/page in facebook chat .

Steps:-
1) Go to the profile of the person whose image you want to insert in facebook chat.
2) See the url of the that page and copy the username or if there is no username copy the profile id .For ex Link to my friend's fb profile is

https://www.facebook.com/anas.ishake 

Then friend's username is anas ishake
If there is url like this :-
www.facebook.com/profile.php?id=1234567890
then copy this 1234567890

3)Now open chat box and type:-
[[username]]
and press enter
Ex:- [[anas.ishake]]
or
[[1234567890]]