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>
diff --git a/src/effects/imagefilters/SkImageFilters.cpp b/src/effects/imagefilters/SkImageFilters.cpp
index 8e5b567..bb5c9a0 100644
--- a/src/effects/imagefilters/SkImageFilters.cpp
+++ b/src/effects/imagefilters/SkImageFilters.cpp
@@ -47,6 +47,10 @@
                                          : SkImageFilter::CropRect(SkRect::MakeEmpty(), 0x0);
 }
 
+// Allow kNoCropRect to be referenced (for certain builds, e.g. macOS libFuzzer chromium target,
+// see crbug.com/1139725)
+constexpr SkRect SkImageFilters::CropRect::kNoCropRect;
+
 void SkImageFilters::RegisterFlattenables() {
     SkAlphaThresholdFilter::RegisterFlattenables();
     SkArithmeticImageFilter::RegisterFlattenables();