List of Google API's is not showing

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Java

Eclipse

google-api

Hi , I am trying to and google API's from eclipse, I have followed the guideline and instruction stated in
the video prepared by google developer channel.

https://www.youtube.com/watch?v=tVIIgcIqoPw

When I go to add google API clicking on the google icon, Google API's are not coming in the list.
just "ad exchange buyer API" is coming on the list.

What I have tried:

I click on the google icon on eclipse toolbar
there add Google APIs is coming in the drop down but after that, none of the google APIs are showing in the list.
I have installed maven
I have installed mercurial