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- // Copyright 2019 The Chromium Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- #include "ash/public/cpp/accessibility_focus_ring_controller.h"
- #include "base/check_op.h"
- namespace ash {
- namespace {
- AccessibilityFocusRingController* g_instance = nullptr;
- }
- AccessibilityFocusRingController* AccessibilityFocusRingController::Get() {
- return g_instance;
- }
- AccessibilityFocusRingController::AccessibilityFocusRingController() {
- DCHECK_EQ(nullptr, g_instance);
- g_instance = this;
- }
- AccessibilityFocusRingController::~AccessibilityFocusRingController() {
- DCHECK_EQ(this, g_instance);
- g_instance = nullptr;
- }
- } // namespace ash
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