hide savelayer's clipmask fields

Bug: skia:9208
Change-Id: Ieff64b3132e7bf4a51ce9d70ea2f1bad492616da
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/223923
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Mike Reed <reed@google.com>
diff --git a/gm/backdrop_imagefilter_croprect.cpp b/gm/backdrop_imagefilter_croprect.cpp
index a3f442b..d8611f9 100644
--- a/gm/backdrop_imagefilter_croprect.cpp
+++ b/gm/backdrop_imagefilter_croprect.cpp
@@ -54,8 +54,8 @@
         if (i == 1) {
             // Backdrop mode, so save a layer using the image filter as the backdrop to filter
             // content on initialization.
-            canvas->saveLayer({nullptr, nullptr, imageFilter.get(), nullptr, nullptr,
-                               SkCanvas::kInitWithPrevious_SaveLayerFlag});
+            canvas->saveLayer(SkCanvas::SaveLayerRec(nullptr, nullptr, imageFilter.get(),
+                                                     SkCanvas::kInitWithPrevious_SaveLayerFlag));
         }
 
         // Restore the saved layer (either a main layer that was just drawn into and needs to be