Enable ASTC 3D textures. ETC are still unsupported, since dEQP fails if we indicate support. Bug: angleproject:3188 Test: dEQP.KHR_GLES2/texture_3d_compressed_texture_*astc* Test: dEQP.KHR_GLES2/texture_3d_compressed_texture_negative_compressed_tex_image Change-Id: I8559ae42d19e63fdf96ea7a49f2d7e3d5098771c Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1723094Reviewed-by: Courtney Goeltzenleuchter <courtneygo@google.com> Reviewed-by: Geoff Lang <geofflang@chromium.org> Commit-Queue: Tim Van Patten <timvp@google.com>
