| /* | 
 |  *  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 | 
 |  | 
 | // TODO(bugs.webrtc.org/4222596): Remove once Chrome has migrated. | 
 | #define RTC_SYSTEM_TIME_IN_WEBRTC_NAMESPACE 1 | 
 |  | 
 | // Re-export symbols from the webrtc namespace for backwards compatibility. | 
 | // TODO(bugs.webrtc.org/4222596): Remove once all references are updated. | 
 | #ifdef WEBRTC_ALLOW_DEPRECATED_NAMESPACES | 
 | namespace rtc { | 
 | using ::webrtc::SystemTimeNanos; | 
 | } | 
 | #endif  // WEBRTC_ALLOW_DEPRECATED_NAMESPACES | 
 |  | 
 | #endif  // RTC_BASE_SYSTEM_TIME_H_ |