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

device/usb/mock_usb_device_handle.h

 // Copyright 2015 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_MOCK_USB_DEVICE_HANDLE_H_
 #define DEVICE_USB_MOCK_USB_DEVICE_HANDLE_H_
 
 #include "device/usb/usb_device_handle.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
+#include "net/base/io_buffer.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
 namespace device {
 
 class MockUsbDeviceHandle : public UsbDeviceHandle {
  public:
   MockUsbDeviceHandle(UsbDevice* device);
 
   scoped_refptr<UsbDevice> GetDevice() const override;
   MOCK_METHOD0(Close, void());
@@ skipping 41 matching lines @@
 
  private:
   ~MockUsbDeviceHandle() override;
 
   UsbDevice* device_;
 };
 
 }  // namespace device
 
 #endif  // DEVICE_USB_MOCK_USB_DEVICE_HANDLE_H_