Create separate entry points for the various flavors of drawRect

gm/yuvtorgbeffect.cpp

Index: gm/yuvtorgbeffect.cpp
diff --git a/gm/yuvtorgbeffect.cpp b/gm/yuvtorgbeffect.cpp
index c0bb890f0a8ad367f497a07fd56016261fc5d13f..6f087e2dfd21fcf48622f51c06e37b8e12b7285e 100644
--- a/gm/yuvtorgbeffect.cpp
+++ b/gm/yuvtorgbeffect.cpp
@@ -124,10 +124,10 @@ protected:
                     viewMatrix.setTranslate(x, y);
                     pipelineBuilder.setRenderTarget(rt);
                     pipelineBuilder.addColorProcessor(fp);
-                    tt.target()->drawSimpleRect(pipelineBuilder,
-                                                GrColor_WHITE,
-                                                viewMatrix,
-                                                renderRect);
+                    tt.target()->drawBWRect(pipelineBuilder,
+                                            GrColor_WHITE,
+                                            viewMatrix,
+                                            renderRect);
                 }
                 x += renderRect.width() + kTestPad;
             }