Remove #pragma once from ash

ash/test/test_shell_delegate.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_TEST_TEST_SHELL_DELEGATE_H_
 #define ASH_TEST_TEST_SHELL_DELEGATE_H_
-#pragma once
 
 #include "ash/shell_delegate.h"
 #include "base/compiler_specific.h"
 
 namespace ash {
 namespace test {
 
 class TestShellDelegate : public ShellDelegate {
  public:
   TestShellDelegate();
@@ skipping 31 matching lines @@
   bool locked_;
   bool spoken_feedback_enabled_;
 
   DISALLOW_COPY_AND_ASSIGN(TestShellDelegate);
 };
 
 }  // namespace test
 }  // namespace ash
 
 #endif  // ASH_TEST_TEST_SHELL_DELEGATE_H_