gfe-relnote: (n/a) In QUIC BBR(v1 and v2) tests, construct the simulator with the test random generator. Test only.

PiperOrigin-RevId: 286014228
Change-Id: I44f098781971054fe456b975b1ac2b380ab4b106
diff --git a/quic/test_tools/simulator/simulator.cc b/quic/test_tools/simulator/simulator.cc
index fdb59db..61ae9a3 100644
--- a/quic/test_tools/simulator/simulator.cc
+++ b/quic/test_tools/simulator/simulator.cc
@@ -10,8 +10,10 @@
 namespace quic {
 namespace simulator {
 
-Simulator::Simulator()
-    : random_generator_(nullptr),
+Simulator::Simulator() : Simulator(nullptr) {}
+
+Simulator::Simulator(QuicRandom* random_generator)
+    : random_generator_(random_generator),
       alarm_factory_(this, "Default Alarm Manager"),
       run_for_should_stop_(false),
       enable_random_delays_(false) {