Fix SkyElement
Fix SkyElement

Adam broke this when trying to refactor it. This CL is just a partial revert of his
CL.

R=abarth@chromium.org

Review URL: https://codereview.chromium.org/689243003

chinmaygarde/mojo,chinmaygarde/mojo,chinmaygarde/mojo,afandria/mojo,chinmaygarde/mojo,jianglu/mojo,jianglu/mojo,afandria/mojo,collinjackson/mojo,jianglu/mojo,afandria/mojo,chinmaygarde/mojo,collinjackson/mojo,chinmaygarde/mojo,afandria/mojo,afandria/mojo,collinjackson/mojo,collinjackson/mojo,afandria/mojo,chinmaygarde/mojo,jianglu/mojo,collinjackson/mojo,chinmaygarde/mojo,chinmaygarde/mojo,collinjackson/mojo,collinjackson/mojo,jianglu/mojo,jianglu/mojo,jianglu/mojo,jianglu/mojo,collinjackson/mojo,collinjackson/mojo,afandria/mojo,afandria/mojo