1// Copyright 2014 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "device/core/device_client.h"
6
7#include "base/logging.h"
8
9namespace device {
10
11namespace {
12
13DeviceClient* g_instance = NULL;
14
15}  // namespace
16
17DeviceClient::DeviceClient() {
18  DCHECK(!g_instance);
19  g_instance = this;
20}
21
22DeviceClient::~DeviceClient() {
23  g_instance = NULL;
24}
25
26/* static */
27DeviceClient* DeviceClient::Get() {
28  DCHECK(g_instance);
29  return g_instance;
30}
31
32UsbService* DeviceClient::GetUsbService() {
33  // This should never be called by clients which do not support the USB API.
34  NOTREACHED();
35  return NULL;
36}
37
38HidService* DeviceClient::GetHidService() {
39  // This should never be called by clients which do not support the HID API.
40  NOTREACHED();
41  return NULL;
42}
43
44}  // namespace device
45