accessibility_controller.cc 652 B

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  1. // Copyright 2019 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. #include "ash/public/cpp/accessibility_controller.h"
  5. #include "base/check_op.h"
  6. namespace ash {
  7. namespace {
  8. AccessibilityController* g_instance = nullptr;
  9. }
  10. AccessibilityController* AccessibilityController::Get() {
  11. return g_instance;
  12. }
  13. AccessibilityController::AccessibilityController() {
  14. DCHECK_EQ(nullptr, g_instance);
  15. g_instance = this;
  16. }
  17. AccessibilityController::~AccessibilityController() {
  18. DCHECK_EQ(this, g_instance);
  19. g_instance = nullptr;
  20. }
  21. } // namespace ash