Remove #pragma once from content

content/public/browser/pepper_flash_settings_helper.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 CONTENT_PUBLIC_BROWSER_PEPPER_FLASH_SETTINGS_HELPER_H_
 #define CONTENT_PUBLIC_BROWSER_PEPPER_FLASH_SETTINGS_HELPER_H_
-#pragma once
 
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
 #include "content/common/content_export.h"
 
 class FilePath;
 
 namespace IPC {
 struct ChannelHandle;
 }
@@ skipping 16 matching lines @@
                                    const OpenChannelCallback& callback) = 0;
 
  protected:
   friend class base::RefCounted<PepperFlashSettingsHelper>;
   virtual ~PepperFlashSettingsHelper() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_PEPPER_FLASH_SETTINGS_HELPER_H_