Update SetPaintToLayer to accept LayerType

ui/views/controls/combobox/combobox.cc

Index: ui/views/controls/combobox/combobox.cc
diff --git a/ui/views/controls/combobox/combobox.cc b/ui/views/controls/combobox/combobox.cc
index 42b79d9f88e5c9431379a01e993b6bcae7ddba9d..7dff005bea9b5d6369a6178dedf097ed6fc356d9 100644
--- a/ui/views/controls/combobox/combobox.cc
+++ b/ui/views/controls/combobox/combobox.cc
@@ -442,7 +442,7 @@ Combobox::Combobox(ui::ComboboxModel* model, Style style)
   // A layer is applied to make sure that canvas bounds are snapped to pixel
   // boundaries (for the sake of drawing the arrow).
   if (UseMd()) {
-    SetPaintToLayer(true);
+    SetPaintToLayer();
     layer()->SetFillsBoundsOpaquely(false);
   } else {
     arrow_image_ = PlatformStyle::CreateComboboxArrow(enabled(), style);