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| 1 // Copyright 2016 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 "services/ui/display/platform_screen.h" |
| 6 |
| 7 #include "base/logging.h" |
| 8 |
| 9 namespace display { |
| 10 |
| 11 // static |
| 12 PlatformScreen* PlatformScreen::instance_ = nullptr; |
| 13 |
| 14 PlatformScreen::PlatformScreen() { |
| 15 DCHECK(!instance_); |
| 16 instance_ = this; |
| 17 } |
| 18 |
| 19 PlatformScreen::~PlatformScreen() { |
| 20 DCHECK_EQ(instance_, this); |
| 21 instance_ = nullptr; |
| 22 } |
| 23 |
| 24 // static |
| 25 PlatformScreen* PlatformScreen::GetInstance() { |
| 26 DCHECK(instance_); |
| 27 return instance_; |
| 28 } |
| 29 |
| 30 } // namespace display |
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