Fix Metal build

NOTRY=true
Bug: skia:
Change-Id: I4db23579c4493693ae67dfbde4750da51ea56092
Reviewed-on: https://skia-review.googlesource.com/59020
Commit-Queue: Greg Daniel <egdaniel@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>
1 file changed