We can store all relevant information in the base class, which lets us avoid using any virtual methods. This will finally let us avoid using reallocations on FBO attachment sets. BUG=angleproject:963 Change-Id: Ib4b61da14efaf843478b059499c01e34f9c65e4f Reviewed-on: https://chromium-review.googlesource.com/263488Reviewed-by: Kenneth Russell <kbr@chromium.org> Reviewed-by: Brandon Jones <bajones@chromium.org> Tested-by: Jamie Madill <jmadill@chromium.org>
