Update the texture flip GM to include subsets & scales

Bug: skia:7075
Change-Id: Idfb7d4d5f348d07ba9b3793d576b469127e5198c
Reviewed-on: https://skia-review.googlesource.com/65841
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
1 file changed