Remove #pragma once from chrome/browser/policy

chrome/browser/policy/auto_enrollment_client.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_AUTO_ENROLLMENT_CLIENT_H_
 #define CHROME_BROWSER_POLICY_AUTO_ENROLLMENT_CLIENT_H_
-#pragma once
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/time.h"
 #include "chrome/browser/policy/cloud_policy_constants.h"
 #include "third_party/protobuf/src/google/protobuf/repeated_field.h"
@@ skipping 124 matching lines @@
   // owner has relinquished ownership.
   base::Time time_start_;
   base::Time time_extra_start_;
 
   DISALLOW_COPY_AND_ASSIGN(AutoEnrollmentClient);
 };
 
 }  // namespace policy
 
 #endif  // CHROME_BROWSER_POLICY_AUTO_ENROLLMENT_CLIENT_H_