diff --git a/BUILD.gn b/BUILD.gn
index f5d1dd6..9b2859c 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -184,6 +184,9 @@
   if (skia_enable_discrete_gpu) {
     defines += [ "SK_ENABLE_DISCRETE_GPU" ]
   }
+  if (!is_official_build) {
+    defines += [ "GR_TEST_UTILS=1" ]
+  }
 }
 
 # Any code that's linked into Skia-the-library should use this config via += skia_library_configs.