Remove #pragma once from chrome/browser/policy

chrome/browser/policy/user_policy_cache.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_USER_POLICY_CACHE_H_
 #define CHROME_BROWSER_POLICY_USER_POLICY_CACHE_H_
-#pragma once
 
 #include <string>
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "base/values.h"
 #include "chrome/browser/policy/cloud_policy_cache_base.h"
 #include "chrome/browser/policy/user_policy_disk_cache.h"
 
 class FilePath;
@@ skipping 75 matching lines @@
   // True if at least one attempt was made to refresh the cache with a freshly
   // fetched policy, or if there is no need to wait for that.
   bool fetch_ready_;
 
   DISALLOW_COPY_AND_ASSIGN(UserPolicyCache);
 };
 
 }  // namespace policy
 
 #endif  // CHROME_BROWSER_POLICY_USER_POLICY_CACHE_H_