device/core/device_client.cc

   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
   9 namespace device {
  10
  11 namespace {
  12
  13 DeviceClient* g_instance;
  14
  15 }  // namespace
  16
  17 DeviceClient::DeviceClient() {
  18   g_instance = this;
  19 }
  20
  21 DeviceClient::~DeviceClient() {
  22   g_instance = nullptr;
  23 }
  24
  25 /* static */
  26 DeviceClient* DeviceClient::Get() {
  27   DCHECK(g_instance);
  28   return g_instance;
  29 }
  30
  31 UsbService* DeviceClient::GetUsbService() {
  32   // This should never be called by clients which do not support the USB API.
  33   NOTREACHED();
  34   return nullptr;
  35 }
  36
  37 HidService* DeviceClient::GetHidService() {
  38   // This should never be called by clients which do not support the HID API.
  39   NOTREACHED();
  40   return nullptr;
  41 }
  42
  43 }  // namespace device