Prevent test-factory objects from being destroyed during atexit.

Change-Id: Ic35cea78c95b33c0037cc6b32a78c864c0e65c07
Bug: skia:13432
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/550178
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
1 file changed