Remove #pragma once from content

content/common/sandbox_methods_linux.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_COMMON_SANDBOX_METHODS_LINUX_H_
 #define CONTENT_COMMON_SANDBOX_METHODS_LINUX_H_
-#pragma once
 
 // This is a list of sandbox IPC methods which the renderer may send to the
 // sandbox host. See http://code.google.com/p/chromium/wiki/LinuxSandboxIPC
 // This isn't the full list, values < 32 are reserved for methods called from
 // Skia.
 class LinuxSandbox {
  public:
   enum Methods {
     METHOD_GET_FONT_FAMILY_FOR_CHARS = 32,
     METHOD_LOCALTIME = 33,
     METHOD_GET_CHILD_WITH_INODE = 34,
     METHOD_GET_STYLE_FOR_STRIKE = 35,
     METHOD_MAKE_SHARED_MEMORY_SEGMENT = 36,
     METHOD_MATCH_WITH_FALLBACK = 37,
   };
 };
 
 #endif  // CONTENT_COMMON_SANDBOX_METHODS_LINUX_H_