Remove #pragma once from chrome/browser/policy

chrome/browser/policy/testing_cloud_policy_subsystem.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 CHROME_BROWSER_POLICY_TESTING_CLOUD_POLICY_SUBSYSTEM_H_
 #define CHROME_BROWSER_POLICY_TESTING_CLOUD_POLICY_SUBSYSTEM_H_
-#pragma once
 
 #include "chrome/browser/policy/cloud_policy_subsystem.h"
 
 namespace policy {
 
 class CloudPolicyCacheBase;
 class CloudPolicyDataStore;
 class EventLogger;
 
 // A CloudPolicySubsystem for testing: it uses EventLogger to issue delayed
@@ skipping 11 matching lines @@
   virtual void CreateCloudPolicyController() OVERRIDE;
 
   EventLogger* logger_;
 
   DISALLOW_COPY_AND_ASSIGN(TestingCloudPolicySubsystem);
 };
 
 }  // namespace Policy
 
 #endif  // CHROME_BROWSER_POLICY_TESTING_CLOUD_POLICY_SUBSYSTEM_H_