Rename gfx::Display/Screen to display::Display/Screen in ash

ash/wm/window_positioner.h

Index: ash/wm/window_positioner.h
diff --git a/ash/wm/window_positioner.h b/ash/wm/window_positioner.h
index a4da8dfeaa781407e95cfc6e647490682cdbecc2..6aab609d4a40a324c66502eca2b4f5f64f884754 100644
--- a/ash/wm/window_positioner.h
+++ b/ash/wm/window_positioner.h
@@ -14,6 +14,10 @@ class Display;
 class Rect;
 }
 
+namespace display {
+using Display = gfx::Display;
+}
+
 namespace ash {
 namespace wm {
 class WmGlobals;
@@ -54,7 +58,7 @@ class ASH_EXPORT WindowPositioner {
       ui::WindowShowState* show_state_out);
 
   // Returns the default bounds for a window to be created in the |display|.
-  static gfx::Rect GetDefaultWindowBounds(const gfx::Display& display);
+  static gfx::Rect GetDefaultWindowBounds(const display::Display& display);
 
   // Check if after removal or hide of the given |removed_window| an
   // automated desktop location management can be performed and