Prevent CircleOp from being tested with MSAA

Change-Id: I307322f2d5e66ef103bdeb791066d6bba11b70ff
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/431636
Reviewed-by: Chris Dalton <csmartdalton@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
diff --git a/src/gpu/ops/GrOvalOpFactory.cpp b/src/gpu/ops/GrOvalOpFactory.cpp
index 873fe5d..e9d1d04 100644
--- a/src/gpu/ops/GrOvalOpFactory.cpp
+++ b/src/gpu/ops/GrOvalOpFactory.cpp
@@ -3441,6 +3441,10 @@
 #if GR_TEST_UTILS
 
 GR_DRAW_OP_TEST_DEFINE(CircleOp) {
+    if (numSamples > 1) {
+        return nullptr;
+    }
+
     do {
         SkScalar rotate = random->nextSScalar1() * 360.f;
         SkScalar translateX = random->nextSScalar1() * 1000.f;
@@ -3476,6 +3480,10 @@
 }
 
 GR_DRAW_OP_TEST_DEFINE(ButtCapDashedCircleOp) {
+    if (numSamples > 1) {
+        return nullptr;
+    }
+
     SkScalar rotate = random->nextSScalar1() * 360.f;
     SkScalar translateX = random->nextSScalar1() * 1000.f;
     SkScalar translateY = random->nextSScalar1() * 1000.f;