Cleanup: IWYU for base/gtest_prod_util.h.

ash/display/unified_mouse_warp_controller.h

 // Copyright 2015 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 ASH_DISPLAY_UNIFIED_MOUSE_WARP_CONTROLLER_H
-#define ASH_DISPLAY_UNIFIED_MOUSE_WARP_CONTROLLER_H
+#ifndef ASH_DISPLAY_UNIFIED_MOUSE_WARP_CONTROLLER_H_
+#define ASH_DISPLAY_UNIFIED_MOUSE_WARP_CONTROLLER_H_
 
 #include "ash/display/mouse_warp_controller.h"
 
-#include "base/gtest_prod_util.h"
 #include "ui/gfx/geometry/rect.h"
 
 namespace aura {
 class Window;
 }
 
 namespace gfx {
 class Point;
 }
 
@@ skipping 34 matching lines @@
 
   int64 current_cursor_display_id_;
 
   bool update_location_for_test_;
 
   DISALLOW_COPY_AND_ASSIGN(UnifiedMouseWarpController);
 };
 
 }  // namespace ash
 
-#endif  // ASH_DISPLAY_UNIFIED_MOUSE_WARP_CONTROLLER_H
+#endif  // ASH_DISPLAY_UNIFIED_MOUSE_WARP_CONTROLLER_H_