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..ef44f6866453065422bc26744212231c4ccb5ade 100644
--- a/ui/views/controls/combobox/combobox.cc
+++ b/ui/views/controls/combobox/combobox.cc
@@ -18,6 +18,7 @@
 #include "ui/base/models/combobox_model.h"
 #include "ui/base/models/combobox_model_observer.h"
 #include "ui/base/resource/resource_bundle.h"
+#include "ui/compositor/layer_type.h"
 #include "ui/events/event.h"
 #include "ui/gfx/animation/throb_animation.h"
 #include "ui/gfx/canvas.h"
@@ -442,7 +443,7 @@ 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(ui::LAYER_TEXTURED);
     layer()->SetFillsBoundsOpaquely(false);
   } else {
     arrow_image_ = PlatformStyle::CreateComboboxArrow(enabled(), style);