WebKit's tools don't like literal tab characters in their repo.

Bug: angleproject:3439
Change-Id: Ifd26e0bbcfaa604ed26f6a42dd7d2248e94dfeaa
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2003929Reviewed-by: Kenneth Russell <kbr@chromium.org>
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Commit-Queue: James Darpinian <jdarpinian@chromium.org>