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 9af202e80e922aeb51ae8fd949b9413261c5db3a..a0e2a06583f2ed7cb3a4c1ebe20c04fc62cd8817 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_byte)
+    : id_(id),
+      bitrate_bps_(bitrate_bps),
+      min_probes_(min_probes),
+      min_byte_(min_byte) {}
+
 RtcEvent::Type RtcEventProbeClusterCreated::GetType() const {
   return RtcEvent::Type::ProbeClusterCreated;
 }