Add context to gfx::Screen calls in support of simultaneous desktop+ash

ui/views/widget/native_widget_aura.h

Index: ui/views/widget/native_widget_aura.h
diff --git a/ui/views/widget/native_widget_aura.h b/ui/views/widget/native_widget_aura.h
index ed65407a896de58e2fe49b0925c6bda9a0cf9553..69d5d7ab2e55f153cedda827f41590c46ecdaa1d 100644
--- a/ui/views/widget/native_widget_aura.h
+++ b/ui/views/widget/native_widget_aura.h
@@ -34,7 +34,8 @@ class VIEWS_EXPORT NativeWidgetAura : public internal::NativeWidgetPrivate,
                                       public aura::client::ActivationDelegate,
                                       public aura::client::DragDropDelegate {
  public:
-  explicit NativeWidgetAura(internal::NativeWidgetDelegate* delegate);
+  explicit NativeWidgetAura(internal::NativeWidgetDelegate* delegate,
+                            gfx::NativeView parent = NULL);
 
   // TODO(beng): Find a better place for this, and the similar method on
   //             NativeWidgetWin.