Fix GM that was trying to create mip-mapped proxies without checking caps

Bug: skia:
Change-Id: Iafd6a7cc1288b7287bb5d127e542e530647d74d4
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/203387
Commit-Queue: Brian Osman <brianosman@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
Auto-Submit: Brian Osman <brianosman@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
1 file changed