[graphite] Fix build for DrawPass

Bug: skia:12466
Change-Id: I2ba1f1541c273ba90032c93a92ed3770dc5b0080
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/453756
Commit-Queue: Michael Ludwig <michaelludwig@google.com>
Commit-Queue: Jim Van Verth <jvanverth@google.com>
Auto-Submit: Michael Ludwig <michaelludwig@google.com>
Reviewed-by: Jim Van Verth <jvanverth@google.com>
2 files changed