Restore proper name of the SkImage_Gpu2Cpu unit test

Looks like this was accidentally renamed as part of
https://codereview.chromium.org/1885623002

Bug: skia:
Change-Id: Ie38d8e3e64d11f0bcbe388622f0b96b2672cd8b0
Reviewed-on: https://skia-review.googlesource.com/c/159663
Auto-Submit: Brian Osman <brianosman@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
1 file changed