Remove #pragma once from ash

ash/accelerators/accelerator_table.h

 // 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 ASH_ACCELERATORS_ACCELERATOR_TABLE_H_
 #define ASH_ACCELERATORS_ACCELERATOR_TABLE_H_
-#pragma once
 
 #include "ash/ash_export.h"
 #include "ui/aura/event.h"
 
 namespace ash {
 
 // Please put if/def sections at the end of the bare section and keep the list
 // within each section in alphabetical order.
 enum AcceleratorAction {
   BRIGHTNESS_DOWN,
@@ skipping 90 matching lines @@
 // Actions allowed while screen is locked (in addition to
 // kActionsAllowedAtLoginOrLockScreen).
 ASH_EXPORT extern const AcceleratorAction kActionsAllowedAtLockScreen[];
 
 // The number of elements in kActionsAllowedAtLockScreen.
 ASH_EXPORT extern const size_t kActionsAllowedAtLockScreenLength;
 
 }  // namespace ash
 
 #endif  // ASH_ACCELERATORS_ACCELERATOR_TABLE_H_