Tweak GLPrograms random seed to "fix" ANGLE bots

See anglebug.com/2098

No-Tree-Checks: true

Change-Id: I793459f57a75ccefc7f071ef506e9d128c5abbe4
Reviewed-on: https://skia-review.googlesource.com/21860
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
1 file changed