Disable null pointer arithmetic warnings for GLES1 conformance tests Required for the rest of Chromium to compile with the warning enabled. Bug: chromium:766891 Change-Id: Ie319df01599434011dc953532a30ad68d6a7c9a3 Reviewed-on: https://chromium-review.googlesource.com/c/1390659 Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org>