Fix unit tests

src/gpu/effects/GrRRectEffect.cpp

Index: src/gpu/effects/GrRRectEffect.cpp
diff --git a/src/gpu/effects/GrRRectEffect.cpp b/src/gpu/effects/GrRRectEffect.cpp
index d7669631ed356920bef240e278da4a777ac87351..636730db221b62cc291dcb70c8c38e94424ca40a 100644
--- a/src/gpu/effects/GrRRectEffect.cpp
+++ b/src/gpu/effects/GrRRectEffect.cpp
@@ -455,7 +455,8 @@ GrEffectRef* EllipticalRRectEffect::TestCreate(SkRandom* random,
     rrect.setRectXY(SkRect::MakeWH(w, h), rx, ry);
     GrEffectRef* effect;
     do {
-        GrEffectEdgeType et = (GrEffectEdgeType)random->nextULessThan(kGrEffectEdgeTypeCnt);
+        GrEffectEdgeType et = random->nextBool() ? kFillAA_GrEffectEdgeType : 
+                                                   kInverseFillAA_GrEffectEdgeType;
         effect = EllipticalRRectEffect::Create(et, rrect);
     } while (NULL == effect);
     return effect;