Update viewer to call the gpuSetup GM entry point

Change-Id: Ic2562d985e144f25dcbb5cf40fafc86a33fb76c2
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/298505
Reviewed-by: Greg Daniel <egdaniel@google.com>
Reviewed-by: Trevor Barton <trevor.barton@sydstu.catholic.edu.au>
Reviewed-by: Kobi Robinson <kobi.robinson@sydstu.catholic.edu.au>
Commit-Queue: Robert Phillips <robertphillips@google.com>
1 file changed