facebook old version / switch to classic facebook missing

  Facebook is the most popular social network in the world 

   people all over the world 

   now facebook lunched new version for their user

  but some of user don't like the new version of facebook.

  so user can switch to back    facebook old version

First  Go to chrome web store and search "facebook old layout". after that download this extension in your chrome Browser.

.... content will update soon