Add missing export on ui.Overlay.getConfiguration
Add missing export on ui.Overlay.getConfiguration

Change-Id: Ief41e49999858164207dff9498afff2636dcecab

tvoli/shaka-player,shaka-project/shaka-player,shaka-project/shaka-player,tvoli/shaka-player,shaka-project/shaka-player,tvoli/shaka-player,tvoli/shaka-player,shaka-project/shaka-player