Remove #pragma once from chrome/browser/policy

chrome/browser/policy/config_dir_policy_loader.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_POLICY_CONFIG_DIR_POLICY_LOADER_H_
 #define CHROME_BROWSER_POLICY_CONFIG_DIR_POLICY_LOADER_H_
-#pragma once
 
 #include "base/file_path.h"
 #include "base/files/file_path_watcher.h"
 #include "chrome/browser/policy/async_policy_loader.h"
 #include "chrome/browser/policy/policy_constants.h"
 
 namespace base {
 class Value;
 }
 
@@ skipping 38 matching lines @@
   // |config_dir_|.
   base::files::FilePathWatcher mandatory_watcher_;
   base::files::FilePathWatcher recommended_watcher_;
 
   DISALLOW_COPY_AND_ASSIGN(ConfigDirPolicyLoader);
 };
 
 }  // namespace policy
 
 #endif  // CHROME_BROWSER_POLICY_CONFIG_DIR_POLICY_LOADER_H_