Guard gencode dumpInfo() calls with GR_TEST_UTILS, instead of SK_DEBUG.

Change-Id: I8d2688b804e18a3a1a440fc1d2fa1631816f3f1b
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/309667
Reviewed-by: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
diff --git a/src/sksl/SkSLHCodeGenerator.cpp b/src/sksl/SkSLHCodeGenerator.cpp
index 2f87bb3..4802eb9 100644
--- a/src/sksl/SkSLHCodeGenerator.cpp
+++ b/src/sksl/SkSLHCodeGenerator.cpp
@@ -355,7 +355,7 @@
     this->writeSection(kClassSection);
     this->writeMake();
     this->writef("    %s(const %s& src);\n"
-                 "#ifdef SK_DEBUG\n"
+                 "#if GR_TEST_UTILS\n"
                  "    SkString dumpInfo() const override;\n"
                  "#endif\n"
                  "    std::unique_ptr<GrFragmentProcessor> clone() const override;\n"