Create separate entry points for the various flavors of drawRect

src/gpu/GrOvalRenderer.cpp

Index: src/gpu/GrOvalRenderer.cpp
diff --git a/src/gpu/GrOvalRenderer.cpp b/src/gpu/GrOvalRenderer.cpp
index c9d6f1fc09f165ec6136e09874f9720727e3a0c1..364c5674c2d8086fa6c602c629bbac724fcf7e14 100644
--- a/src/gpu/GrOvalRenderer.cpp
+++ b/src/gpu/GrOvalRenderer.cpp
@@ -1458,7 +1458,7 @@ bool GrOvalRenderer::DrawDRRect(GrDrawTarget* target,
     if (applyAA) {
         bounds.outset(SK_ScalarHalf, SK_ScalarHalf);
     }
-    target->drawBWRect(pipelineBuilder, color, SkMatrix::I(), bounds, NULL, &invert);
+    target->drawBWRect(pipelineBuilder, color, SkMatrix::I(), bounds, invert);
     return true;
 }