Revert of Convert device::UsbConfigDescriptor and friends to structs.

device/usb/usb_descriptors.cc

-// 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.
-
-#include "device/usb/usb_descriptors.h"
-
-namespace device {
-
-UsbEndpointDescriptor::UsbEndpointDescriptor()
-    : address(0),
-      direction(USB_DIRECTION_INBOUND),
-      maximum_packet_size(0),
-      synchronization_type(USB_SYNCHRONIZATION_NONE),
-      transfer_type(USB_TRANSFER_CONTROL),
-      usage_type(USB_USAGE_DATA),
-      polling_interval(0) {
-}
-
-UsbEndpointDescriptor::~UsbEndpointDescriptor() {
-}
-
-UsbInterfaceDescriptor::UsbInterfaceDescriptor()
-    : interface_number(0),
-      alternate_setting(0),
-      interface_class(0),
-      interface_subclass(0),
-      interface_protocol(0) {
-}
-
-UsbInterfaceDescriptor::~UsbInterfaceDescriptor() {
-}
-
-UsbConfigDescriptor::UsbConfigDescriptor()
-    : configuration_value(0),
-      self_powered(false),
-      remote_wakeup(false),
-      maximum_power(0) {
-}
-
-UsbConfigDescriptor::~UsbConfigDescriptor() {
-}
-
-}  // namespace device