skip huge allocation in test on 32bit devices

Bug: skia:
Change-Id: I931e02bab8b876e3d4ba699231178decd19697d5
Reviewed-on: https://skia-review.googlesource.com/c/188621
Commit-Queue: Mike Reed <reed@google.com>
Reviewed-by: Mike Reed <reed@google.com>
Auto-Submit: Mike Reed <reed@google.com>
1 file changed