Remove #pragma once from content

content/public/common/result_codes.h

 // Copyright (c) 2011 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 CONTENT_PUBLIC_COMMON_RESULT_CODES_H_
 #define CONTENT_PUBLIC_COMMON_RESULT_CODES_H_
-#pragma once
 
 // This file consolidates all the return codes for the browser and renderer
 // process. The return code is the value that:
 // a) is returned by main() or winmain(), or
 // b) specified in the call for ExitProcess() or TerminateProcess(), or
 // c) the exception value that causes a process to terminate.
 //
 // It is advisable to not use negative numbers because the Windows API returns
 // it as an unsigned long and the exception values have high numbers. For
 // example EXCEPTION_ACCESS_VIOLATION value is 0xC0000005.
@@ skipping 13 matching lines @@
   // A bad message caused the process termination.
   RESULT_CODE_KILLED_BAD_MESSAGE,
 
   // Last return code (keep this last).
   RESULT_CODE_LAST_CODE
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_COMMON_RESULT_CODES_H_