This enum is only availabe in GLES 3. We were failing a dEQP state
query test (fbo.draw_framebuffer_default_framebuffer)

Change-Id: I4cfb07b8597899561b8cc7956a9eb4cd4b0a99a8
Reviewed-on: https://chromium-review.googlesource.com/181782Tested-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>