We were using the new, larger size for our buffer data copy step, instead of the old, smaller size. This bug was causing a crash on older nVidia drivers during normal browser usage. Reproducible with the index-validation-large-buffer WebGL test. BUG=angle:667 BUG=384420 Change-Id: I98ee893e0d8ba0bfc9adfe5a338da9b940248879 Reviewed-on: https://chromium-review.googlesource.com/203776Tested-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Shannon Woods <shannonwoods@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/207122Reviewed-by: Nicolas Capens <capn@chromium.org>
