Update SetPaintToLayer to accept LayerType

ash/wm/window_mirror_view.cc

Index: ash/wm/window_mirror_view.cc
diff --git a/ash/wm/window_mirror_view.cc b/ash/wm/window_mirror_view.cc
index 52c87d15e070181c2474abac64e57dab64ff7839..44916c266d2224168f6f6d1032e71c4c962374f2 100644
--- a/ash/wm/window_mirror_view.cc
+++ b/ash/wm/window_mirror_view.cc
@@ -12,6 +12,7 @@
 #include "ui/aura/window.h"
 #include "ui/compositor/layer.h"
 #include "ui/compositor/layer_tree_owner.h"
+#include "ui/compositor/layer_type.h"
 #include "ui/views/widget/widget.h"
 #include "ui/wm/core/window_util.h"
 
@@ -86,7 +87,7 @@ void WindowMirrorView::InitLayerOwner() {
   layer_owner_ =
       ::wm::MirrorLayers(target_->aura_window(), false /* sync_bounds */);
 
-  SetPaintToLayer(true);
+  SetPaintToLayer(ui::LAYER_TEXTURED);
   layer()->Add(GetMirrorLayer());
   // This causes us to clip the non-client areas of the window.
   layer()->SetMasksToBounds(true);