Avoid copying of texture format info structures Use const pointers to the statically allocated structures instead of copying them in TextureStorage11. This avoids the cost of copying and saves a little bit of memory. BUG=angleproject:1244 TEST=angle_end2end_tests Change-Id: Ib59fddd68ba9bc53e491d55683416c0661f26e0e Reviewed-on: https://chromium-review.googlesource.com/333930 Reviewed-by: Corentin Wallez <cwallez@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>