Add the internals of RtcEvent's subclasses

webrtc/logging/rtc_event_log/events/rtc_event.h

 /*
  *  Copyright (c) 2017 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 WEBRTC_LOGGING_RTC_EVENT_LOG_EVENTS_RTC_EVENT_H_
 #define WEBRTC_LOGGING_RTC_EVENT_LOG_EVENTS_RTC_EVENT_H_
 
+#include <webrtc/typedefs.h>
+
+namespace rtc {
+int64_t TimeMicros();
+}  // namespace rtc
+
 namespace webrtc {
 
 // This class allows us to store unencoded RTC events. Subclasses of this class
 // store the actual information. This allows us to keep all unencoded events,
 // even when their type and associated information differ, in the same buffer.
 // Additionally, it prevents dependency leaking - a module that only logs
 // events of type RtcEvent_A doesn't need to know about anything associated
 // with events of type RtcEvent_B.
 class RtcEvent {
  public:
@@ skipping 14 matching lines @@
     ProbeResultFailure,
     ProbeResultSuccess,
     RtcpPacketIncoming,
     RtcpPacketOutgoing,
     RtpPacketIncoming,
     RtpPacketOutgoing,
     VideoReceiveStreamConfig,
     VideoSendStreamConfig
   };
 
+  RtcEvent() : timestamp_us_(rtc::TimeMicros()) {}
   virtual ~RtcEvent() = default;
 
   virtual Type GetType() const = 0;
 
   virtual bool IsConfigEvent() const = 0;
+
+  const int64_t timestamp_us_;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_LOGGING_RTC_EVENT_LOG_EVENTS_RTC_EVENT_H_