Remove #pragma once from content

content/public/browser/child_process_security_policy.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 CONTENT_PUBLIC_BROWSER_CHILD_PROCESS_SECURITY_POLICY_H_
 #define CONTENT_PUBLIC_BROWSER_CHILD_PROCESS_SECURITY_POLICY_H_
-#pragma once
 
 #include <set>
 #include <string>
 
 #include "base/basictypes.h"
 #include "content/common/content_export.h"
 
 class FilePath;
 
 namespace content {
@@ skipping 81 matching lines @@
 
   // Returns true iff read access has been granted to the file system with
   // |filesystem_id|.
   virtual bool CanReadFileSystem(int child_id,
                                  const std::string& filesystem_id) = 0;
 };
 
 };  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_CHILD_PROCESS_SECURITY_POLICY_H_