Implement an event-based simulator for QuicConnection

net/quic/core/congestion_control/simulation/actor.cc

+#include "net/quic/core/congestion_control/simulation/actor.h"
+#include "net/quic/core/congestion_control/simulation/simulator.h"
+
+namespace net {
+namespace simulation {
+
+Actor::Actor(Simulator* simulator, std::string name)
+    : simulator_(simulator),
+      clock_(simulator->GetClock()),
+      name_(std::move(name)) {
+  simulator->AddActor(this);
+}
+
+Actor::~Actor() {}
+
+void Actor::Schedule(QuicTime next_tick) {
+  simulator_->Schedule(this, next_tick);
+}
+
+void Actor::Unschedule() {
+  simulator_->Unschedule(this);
+}
+
+}  // namespace simulation
+}  // namespace net