Changes ScreenMusDelegate::GetWindowAtScreenPoint to return aura::Window

ui/views/mus/screen_mus_delegate.h

Index: ui/views/mus/screen_mus_delegate.h
diff --git a/ui/views/mus/screen_mus_delegate.h b/ui/views/mus/screen_mus_delegate.h
index cdba900ebb08b30538447eb0cf230f93cac22675..b8859caaa8ba8aad29662405fb11319028c76a32 100644
--- a/ui/views/mus/screen_mus_delegate.h
+++ b/ui/views/mus/screen_mus_delegate.h
@@ -7,12 +7,12 @@
 
 #include "ui/views/mus/mus_export.h"
 
-namespace gfx {
-class Point;
+namespace aura {
+class Window;
 }
 
-namespace ui {
-class Window;
+namespace gfx {
+class Point;
 }
 
 namespace views {
@@ -24,7 +24,7 @@ class VIEWS_MUS_EXPORT ScreenMusDelegate {
 
   virtual gfx::Point GetCursorScreenPoint() = 0;
 
-  virtual ui::Window* GetWindowAtScreenPoint(const gfx::Point& point) = 0;
+  virtual aura::Window* GetWindowAtScreenPoint(const gfx::Point& point) = 0;
 
  protected:
   virtual ~ScreenMusDelegate() {}