Separate usb device handle from usb device. (deprecate)

chrome/browser/usb/usb_interface.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_USB_USB_INTERFACE_H_
 #define CHROME_BROWSER_USB_USB_INTERFACE_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 
 struct libusb_config_descriptor;
 struct libusb_endpoint_descriptor;
 struct libusb_interface;
 struct libusb_interface_descriptor;
 
 typedef libusb_config_descriptor* PlatformUsbConfigDescriptor;
 typedef const libusb_endpoint_descriptor* PlatformUsbEndpointDescriptor;
 typedef const libusb_interface* PlatformUsbInterface;
 typedef const libusb_interface_descriptor* PlatformUsbInterfaceDescriptor;
 
-class UsbDevice;
-
 enum UsbTransferType {
   USB_TRANSFER_CONTROL = 0,
   USB_TRANSFER_ISOCHRONOUS,
   USB_TRANSFER_BULK,
   USB_TRANSFER_INTERRUPT,
 };
 
 enum UsbEndpointDirection {
   USB_DIRECTION_INBOUND = 0,
   USB_DIRECTION_OUTBOUND,
@@ skipping 88 matching lines @@
       GetInterface(size_t index) const;
 
  private:
   friend class base::RefCounted<UsbConfigDescriptor>;
   ~UsbConfigDescriptor();
 
   PlatformUsbConfigDescriptor config_;
 };
 
 #endif  // CHROME_BROWSER_USB_USB_INTERFACE_H_