Add the internals of RtcEvent's subclasses

webrtc/logging/rtc_event_log/events/rtc_event_probe_result_failure.h

Index: webrtc/logging/rtc_event_log/events/rtc_event_probe_result_failure.h
diff --git a/webrtc/logging/rtc_event_log/events/rtc_event_probe_result_failure.h b/webrtc/logging/rtc_event_log/events/rtc_event_probe_result_failure.h
index 44b40319180cdd3262ba36c4c17040471226c0ee..908cf2efc213b25ddea695dcde831a52413ea0dc 100644
--- a/webrtc/logging/rtc_event_log/events/rtc_event_probe_result_failure.h
+++ b/webrtc/logging/rtc_event_log/events/rtc_event_probe_result_failure.h
@@ -15,11 +15,21 @@
 
 namespace webrtc {
 
+enum ProbeFailureReason {
+  kInvalidSendReceiveInterval,
+  kInvalidSendReceiveRatio,
+  kTimeout
+};
+
 class RtcEventProbeResultFailure final : public RtcEvent {
  public:
+  RtcEventProbeResultFailure(int id, ProbeFailureReason failure_reason);
   ~RtcEventProbeResultFailure() override = default;
 
   Type GetType() const override;
+
+  const int id_;
+  const ProbeFailureReason failure_reason_;
 };
 
 }  // namespace webrtc