make GR_TEST_UTILS=0 work

Change-Id: Icce35140ca08b65217b32e6b1ffc6ad2f38ab37f
Reviewed-on: https://skia-review.googlesource.com/7840
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Hal Canary <halcanary@google.com>
diff --git a/src/effects/gradients/SkRadialGradient.cpp b/src/effects/gradients/SkRadialGradient.cpp
index 4eb3e6d..a7dca76 100644
--- a/src/effects/gradients/SkRadialGradient.cpp
+++ b/src/effects/gradients/SkRadialGradient.cpp
@@ -303,6 +303,7 @@
 
 GR_DEFINE_FRAGMENT_PROCESSOR_TEST(GrRadialGradient);
 
+#if GR_TEST_UTILS
 sk_sp<GrFragmentProcessor> GrRadialGradient::TestCreate(GrProcessorTestData* d) {
     SkPoint center = {d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()};
     SkScalar radius = d->fRandom->nextUScalar1();
@@ -318,6 +319,7 @@
     GrAlwaysAssert(fp);
     return fp;
 }
+#endif
 
 /////////////////////////////////////////////////////////////////////