|  | /* | 
|  | *  Copyright 2021 The WebRTC Project Authors. All rights reserved. | 
|  | * | 
|  | *  Use of this source code is governed by a BSD-style license | 
|  | *  that can be found in the LICENSE file in the root of the source | 
|  | *  tree. An additional intellectual property rights grant can be found | 
|  | *  in the file PATENTS.  All contributing project authors may | 
|  | *  be found in the AUTHORS file in the root of the source tree. | 
|  | */ | 
|  |  | 
|  | #ifndef RTC_BASE_SYSTEM_TIME_H_ | 
|  | #define RTC_BASE_SYSTEM_TIME_H_ | 
|  |  | 
|  | #include <cstdint> | 
|  |  | 
|  | namespace webrtc { | 
|  |  | 
|  | // Returns the actual system time, even if a clock is set for testing. | 
|  | // Useful for timeouts while using a test clock, or for logging. | 
|  | int64_t SystemTimeNanos(); | 
|  |  | 
|  | }  // namespace webrtc | 
|  |  | 
|  | #define RTC_SYSTEM_TIME_IN_WEBRTC_NAMESPACE 1 | 
|  |  | 
|  |  | 
|  | #endif  // RTC_BASE_SYSTEM_TIME_H_ |