Remove #pragma once from chrome/browser/extensions

chrome/browser/extensions/api/usb/usb_device_resource.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_EXTENSIONS_API_USB_USB_DEVICE_RESOURCE_H_
 #define CHROME_BROWSER_EXTENSIONS_API_USB_USB_DEVICE_RESOURCE_H_
-#pragma once
 
 #include <set>
 
 #include "base/basictypes.h"
 #include "base/memory/linked_ptr.h"
 #include "base/synchronization/lock.h"
 #include "chrome/browser/extensions/api/api_resource.h"
 #include "chrome/browser/usb/usb_device.h"
 #include "chrome/common/extensions/api/experimental_usb.h"
 
@@ skipping 34 matching lines @@
                         UsbTransferStatus status);
 
   scoped_refptr<UsbDevice> device_;
 
   DISALLOW_COPY_AND_ASSIGN(UsbDeviceResource);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_USB_USB_DEVICE_RESOURCE_H_