Add flag to hide non-sampling imageshader factories

Bug: skia:11056
Change-Id: Ic79876106c003f6061cbb50ad2f4a4bf4f446231
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/341681
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
diff --git a/tests/FlattenableFactoryToName.cpp b/tests/FlattenableFactoryToName.cpp
index 58f3d93..f29720d 100644
--- a/tests/FlattenableFactoryToName.cpp
+++ b/tests/FlattenableFactoryToName.cpp
@@ -37,5 +37,5 @@
     bm.allocN32Pixels(8, 8);
     bm.eraseColor(SK_ColorCYAN);
     sk_sp<SkImage> image(SkImage::MakeFromBitmap(bm));
-    test_flattenable(r, image->makeShader().get(), "SkImage::newShader()");
+    test_flattenable(r, image->makeShader(SkSamplingOptions()).get(), "SkImage::newShader()");
 }