Remove net/base/io_buffer.h include from usb_device_handle.h.

device/usb/usb_device_handle.h

 // Copyright 2014 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 DEVICE_USB_USB_DEVICE_HANDLE_H_
 #define DEVICE_USB_USB_DEVICE_HANDLE_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <map>
 #include <vector>
 
-#include "base/callback.h"
+#include "base/callback_forward.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/strings/string16.h"
 #include "base/threading/thread_checker.h"
 #include "device/usb/usb_descriptors.h"
-#include "net/base/io_buffer.h"
+
+namespace net {
+class IOBuffer;
+}
 
 namespace device {
 
 class UsbDevice;
 
 enum UsbTransferStatus {
   USB_TRANSFER_COMPLETED = 0,
   USB_TRANSFER_ERROR,
   USB_TRANSFER_TIMEOUT,
   USB_TRANSFER_CANCELLED,
@@ skipping 74 matching lines @@
   UsbDeviceHandle();
 
   virtual ~UsbDeviceHandle();
 
   DISALLOW_COPY_AND_ASSIGN(UsbDeviceHandle);
 };
 
 }  // namespace device
 
 #endif  // DEVICE_USB_USB_DEVICE_HANDLE_H_