Remove #pragma once from chrome/browser/extensions

chrome/browser/extensions/admin_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 CHROME_BROWSER_EXTENSIONS_ADMIN_POLICY_H_
 #define CHROME_BROWSER_EXTENSIONS_ADMIN_POLICY_H_
-#pragma once
 
 #include "base/values.h"
 #include "chrome/common/extensions/extension.h"
 
 namespace extensions {
 class Extension;
 }
 
 // Functions for providing information about the extension whitelist,
 // blacklist, and forcelist imposed by admin policy.
@@ skipping 17 matching lines @@
 bool UserMayModifySettings(const Extension* extension, string16* error);
 
 // Returns false if the extension is required to remain running. In practice
 // this enforces the admin policy forcelist.
 bool MustRemainEnabled(const Extension* extension, string16* error);
 
 }  // namespace
 }  // namespace
 
 #endif  // CHROME_BROWSER_EXTENSIONS_ADMIN_POLICY_H_