Add BWE plot to event log analyzer.

webrtc/test/fuzzers/congestion_controller_feedback_fuzzer.cc

Index: webrtc/test/fuzzers/congestion_controller_feedback_fuzzer.cc
diff --git a/webrtc/test/fuzzers/congestion_controller_feedback_fuzzer.cc b/webrtc/test/fuzzers/congestion_controller_feedback_fuzzer.cc
index aa0d62e1387abc0bbb1e797c4e14f41d00665ca1..6fb5f9ba1fb2bb26d831ddff8eefc9059b90f336 100644
--- a/webrtc/test/fuzzers/congestion_controller_feedback_fuzzer.cc
+++ b/webrtc/test/fuzzers/congestion_controller_feedback_fuzzer.cc
@@ -26,42 +26,13 @@ class NullBitrateObserver : public CongestionController::Observer,
                                uint32_t bitrate) override {}
 };
 
-class NullEventLog : public RtcEventLog {
- public:
-  ~NullEventLog() override {}
-  bool StartLogging(const std::string& file_name,
-                    int64_t max_size_bytes) override {
-    return true;
-  }
-  bool StartLogging(rtc::PlatformFile platform_file, int64_t max_size_bytes) {
-    return true;
-  }
-  void StopLogging() override{};
-  void LogVideoReceiveStreamConfig(
-      const webrtc::VideoReceiveStream::Config& config) override {}
-  void LogVideoSendStreamConfig(
-      const webrtc::VideoSendStream::Config& config) override {}
-  void LogRtpHeader(PacketDirection direction,
-                    MediaType media_type,
-                    const uint8_t* header,
-                    size_t packet_length) override {}
-  void LogRtcpPacket(PacketDirection direction,
-                     MediaType media_type,
-                     const uint8_t* packet,
-                     size_t length) override {}
-  void LogAudioPlayout(uint32_t ssrc) override {}
-  void LogBwePacketLossEvent(int32_t bitrate,
-                             uint8_t fraction_loss,
-                             int32_t total_packets) override {}
-};
-
 void FuzzOneInput(const uint8_t* data, size_t size) {
   size_t i = 0;
   if (size < sizeof(int64_t) + sizeof(uint8_t) + sizeof(uint32_t))
     return;
   SimulatedClock clock(data[i++]);
   NullBitrateObserver observer;
-  NullEventLog event_log;
+  RtcEventLogNullImpl event_log;
   CongestionController cc(&clock, &observer, &observer, &event_log);
   RemoteBitrateEstimator* rbe = cc.GetRemoteBitrateEstimator(true);
   RTPHeader header;