Update SetPaintToLayer to accept LayerType

ash/common/system/tray/throbber_view.cc

Index: ash/common/system/tray/throbber_view.cc
diff --git a/ash/common/system/tray/throbber_view.cc b/ash/common/system/tray/throbber_view.cc
index a049503acb6b53611d82fe6b8f3e3df88d56b0bb..645298e1eb304e085dad0e0e91ade7fd7af0cc17 100644
--- a/ash/common/system/tray/throbber_view.cc
+++ b/ash/common/system/tray/throbber_view.cc
@@ -8,6 +8,7 @@
 #include "grit/ash_resources.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/compositor/layer.h"
+#include "ui/compositor/layer_type.h"
 #include "ui/compositor/scoped_layer_animation_settings.h"
 
 namespace ash {
@@ -40,7 +41,7 @@ ThrobberView::ThrobberView() {
   throbber_->set_stop_delay_ms(kThrobberAnimationDurationMs);
   AddChildView(throbber_);
 
-  SetPaintToLayer(true);
+  SetPaintToLayer(ui::LAYER_TEXTURED);
   layer()->SetFillsBoundsOpaquely(false);
   layer()->SetOpacity(0.0);
 }