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 "extensions/shell/browser/desktop_controller.h"
6
7#include "base/logging.h"
8#include "base/macros.h"
9
10namespace extensions {
11namespace {
12
13DesktopController* g_instance = NULL;
14
15}  // namespace
16
17// static
18DesktopController* DesktopController::instance() {
19  return g_instance;
20}
21
22DesktopController::DesktopController() {
23  CHECK(!g_instance) << "DesktopController already exists";
24  g_instance = this;
25}
26
27DesktopController::~DesktopController() {
28  DCHECK(g_instance);
29  g_instance = NULL;
30}
31
32}  // namespace extensions
33