Allow kNoCropRect to be referenced

This should fix the macOS fuzzer build.

Bug: chromium:1139725
Change-Id: I14090da4ee7d9d0a6e515b05c23c0a1e50ca4e5f
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/328385
Auto-Submit: Michael Ludwig <michaelludwig@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Michael Ludwig <michaelludwig@google.com>
1 file changed