Ignore deprecation warning for OpenGL and replace deprecated enum names. Change-Id: Ie07c566f1b28610add074dc4da8ab66399cef94b Reviewed-on: https://go-review.googlesource.com/c/mobile/+/165578 Run-TryBot: Elias Naur <mail@eliasnaur.com> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>