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