Add the internals of RtcEvent's subclasses

webrtc/logging/rtc_event_log/events/rtc_event_bwe_update_delay_based.cc

Index: webrtc/logging/rtc_event_log/events/rtc_event_bwe_update_delay_based.cc
diff --git a/webrtc/logging/rtc_event_log/events/rtc_event_bwe_update_delay_based.cc b/webrtc/logging/rtc_event_log/events/rtc_event_bwe_update_delay_based.cc
index 80d956aa8cb7d9d113c358f690d286cf5ab795fe..e6b1dd9fcc5ec6df9fd710d348e861e27b126109 100644
--- a/webrtc/logging/rtc_event_log/events/rtc_event_bwe_update_delay_based.cc
+++ b/webrtc/logging/rtc_event_log/events/rtc_event_bwe_update_delay_based.cc
@@ -10,8 +10,17 @@
 
 #include "webrtc/logging/rtc_event_log/events/rtc_event_bwe_update_delay_based.h"
 
+#include "webrtc/modules/remote_bitrate_estimator/include/bwe_defines.h"
+
 namespace webrtc {
 
+RtcEventBweUpdateDelayBased::RtcEventBweUpdateDelayBased(
+    int32_t bitrate_bps,
+    BandwidthUsage detector_state)
+    : bitrate_bps_(bitrate_bps), detector_state_(detector_state) {}
+
+RtcEventBweUpdateDelayBased::~RtcEventBweUpdateDelayBased() = default;
+
 RtcEvent::Type RtcEventBweUpdateDelayBased::GetType() const {
   return RtcEvent::Type::BweUpdateDelayBased;
 }