TestScreen shouldn't be marked aura export

ash/screen_ash.h

Index: ash/screen_ash.h
diff --git a/ui/aura/screen_aura.h b/ash/screen_ash.h
similarity index 77%
copy from ui/aura/screen_aura.h
copy to ash/screen_ash.h
index ee1540dc51cc62f5b5a92f34a9127378471fecbf..deaa76fecbda8454ff20afe62c6676278697b3f0 100644
--- a/ui/aura/screen_aura.h
+++ b/ash/screen_ash.h
@@ -1,26 +1,28 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef UI_AURA_SCREEN_AURA_H_
-#define UI_AURA_SCREEN_AURA_H_
+#ifndef ASH_SCREEN_ASH_H_
+#define ASH_SCREEN_ASH_H_
 #pragma once
 
 #include "base/compiler_specific.h"
-#include "ui/aura/aura_export.h"
+#include "ash/ash_export.h"
 #include "ui/gfx/insets.h"
 #include "ui/gfx/screen.h"
 
 namespace aura {
-
 class RootWindow;
+}
+
+namespace ash {
 
 // Aura implementation of gfx::Screen. Implemented here to avoid circular
 // dependencies.
-class AURA_EXPORT ScreenAura : public gfx::Screen {
+class ASH_EXPORT ScreenAsh : public gfx::Screen {
  public:
-  explicit ScreenAura(RootWindow* root_window);
-  virtual ~ScreenAura();
+  explicit ScreenAsh(aura::RootWindow* root_window);
+  virtual ~ScreenAsh();
 
   void set_work_area_insets(const gfx::Insets& insets) {
     work_area_insets_ = insets;
@@ -50,11 +52,11 @@ class AURA_EXPORT ScreenAura : public gfx::Screen {
   // Insets for the work area.
   gfx::Insets work_area_insets_;
 
-  RootWindow* root_window_;
+  aura::RootWindow* root_window_;
 
-  DISALLOW_COPY_AND_ASSIGN(ScreenAura);
+  DISALLOW_COPY_AND_ASSIGN(ScreenAsh);
 };
 
-}  // namespace aura
+}  // namespace ash
 
-#endif  // UI_AURA_SCREEN_AURA_H_
+#endif  // ASH_SCREEN_ASH_H_