Add the internals of RtcEvent's subclasses

webrtc/logging/rtc_event_log/events/rtc_event_probe_cluster_created.cc

Index: webrtc/logging/rtc_event_log/events/rtc_event_probe_cluster_created.cc
diff --git a/webrtc/logging/rtc_event_log/events/rtc_event_probe_cluster_created.cc b/webrtc/logging/rtc_event_log/events/rtc_event_probe_cluster_created.cc
index 740b44e8b3155323e45d2142ea6d68c6433ac098..001e162fd2bfb0b33a674f14b54cc1c5c9f9a5de 100644
--- a/webrtc/logging/rtc_event_log/events/rtc_event_probe_cluster_created.cc
+++ b/webrtc/logging/rtc_event_log/events/rtc_event_probe_cluster_created.cc
@@ -12,6 +12,15 @@
 
 namespace webrtc {
 
+RtcEventProbeClusterCreated::RtcEventProbeClusterCreated(int id,
+                                                         int bitrate_bps,
+                                                         int min_probes,
+                                                         int min_bytes)
+    : id_(id),
+      bitrate_bps_(bitrate_bps),
+      min_probes_(min_probes),
+      min_bytes_(min_bytes) {}
+
 RtcEvent::Type RtcEventProbeClusterCreated::GetType() const {
   return RtcEvent::Type::ProbeClusterCreated;
 }