Log probe results to RtcEventLog.

webrtc/modules/congestion_controller/probe_bitrate_estimator_unittest.cc

Index: webrtc/modules/congestion_controller/probe_bitrate_estimator_unittest.cc
diff --git a/webrtc/modules/congestion_controller/probe_bitrate_estimator_unittest.cc b/webrtc/modules/congestion_controller/probe_bitrate_estimator_unittest.cc
index a476bbaf0f9c0e0de5434ad9ce77d18631e911b8..f86c93fae3aeee6fd26475a3123fad3dadcdffbe 100644
--- a/webrtc/modules/congestion_controller/probe_bitrate_estimator_unittest.cc
+++ b/webrtc/modules/congestion_controller/probe_bitrate_estimator_unittest.cc
@@ -27,7 +27,7 @@ constexpr int kDefaultMinBytes = 5000;
 
 class TestProbeBitrateEstimator : public ::testing::Test {
  public:
-  TestProbeBitrateEstimator() : probe_bitrate_estimator_() {}
+  TestProbeBitrateEstimator() : probe_bitrate_estimator_(nullptr) {}
 
   // TODO(philipel): Use PacedPacketInfo when ProbeBitrateEstimator is rewritten
   //                 to use that information.