Updated ShoppingContent.php

This change has been generated by a script that has detected changes in the
discovery doc of the API.

Check http://developers.google.com/discovery for more info.
Updated Reseller.php

This change has been generated by a script that has detected changes in the
discovery doc of the API.

Check http://developers.google.com/discovery for more info.
Updated ShoppingContent.php

This change has been generated by a script that has detected changes in the
discovery doc of the API.

Check http://developers.google.com/discovery for more info.