Fix etc1 GM in preReleaseGpuContext mode.

Bug: skia:8684
Change-Id: I44477c77326a4e502be4df5fdad25b126403d3a7
Reviewed-on: https://skia-review.googlesource.com/c/184191
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Jim Van Verth <jvanverth@google.com>
1 file changed