Pass sampling to surface.draw

Bug: skia:7650
Change-Id: I97941a44faa4176f94d57a9c1626ac36b0c0c4ea
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/350557
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Mike Reed <reed@google.com>
diff --git a/gm/srcmode.cpp b/gm/srcmode.cpp
index 69ec695..fad75a8 100644
--- a/gm/srcmode.cpp
+++ b/gm/srcmode.cpp
@@ -133,7 +133,7 @@
         auto surf(compat_surface(canvas, this->getISize()));
         surf->getCanvas()->drawColor(SK_ColorWHITE);
         this->drawContent(surf->getCanvas());
-        surf->draw(canvas, 0, 0, nullptr);
+        surf->draw(canvas, 0, 0);
     }
 };