Move several GrContextOptions fields behind GR_TEST_UTILS

Bug: skia:
Change-Id: I35bc08ad72fb94d8e47fe342d314c4496b954226
Reviewed-on: https://skia-review.googlesource.com/40881
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
diff --git a/dm/DMSrcSink.cpp b/dm/DMSrcSink.cpp
index dc8a913..384ad10 100644
--- a/dm/DMSrcSink.cpp
+++ b/dm/DMSrcSink.cpp
@@ -1530,7 +1530,7 @@
     // Also, force us to only use the software path renderer, so we really stress-test the threaded
     // version of that code.
     GrContextOptions contextOptions = this->baseContextOptions();
-    contextOptions.fGpuPathRenderers = GrContextOptions::GpuPathRenderers::kNone;
+    contextOptions.fGpuPathRenderers = GpuPathRenderers::kNone;
 
     contextOptions.fExecutor = fExecutor.get();
     Error err = this->onDraw(src, dst, wStream, log, contextOptions);