Revert of Move delay_based_bwe_ into CongestionController

webrtc/tools/event_log_visualizer/analyzer.cc

Index: webrtc/tools/event_log_visualizer/analyzer.cc
diff --git a/webrtc/tools/event_log_visualizer/analyzer.cc b/webrtc/tools/event_log_visualizer/analyzer.cc
index e80ca38d720a2b1d3e7d5627751a43cecb25288c..15b3e821b843f9647f92e0be053d68025964f4b2 100644
--- a/webrtc/tools/event_log_visualizer/analyzer.cc
+++ b/webrtc/tools/event_log_visualizer/analyzer.cc
@@ -24,6 +24,7 @@
 #include "webrtc/call/audio_send_stream.h"
 #include "webrtc/call/call.h"
 #include "webrtc/common_types.h"
+#include "webrtc/modules/bitrate_controller/include/bitrate_controller.h"
 #include "webrtc/modules/congestion_controller/include/congestion_controller.h"
 #include "webrtc/modules/include/module_common_types.h"
 #include "webrtc/modules/rtp_rtcp/include/rtp_rtcp.h"
@@ -1071,9 +1072,11 @@
       RTC_DCHECK_EQ(clock.TimeInMicroseconds(), NextRtcpTime());
       const LoggedRtcpPacket& rtcp = *rtcp_iterator->second;
       if (rtcp.type == kRtcpTransportFeedback) {
-        cc.OnTransportFeedback(
-            *static_cast<rtcp::TransportFeedback*>(rtcp.packet.get()));
-        std::vector<PacketFeedback> feedback = cc.GetTransportFeedbackVector();
+        TransportFeedbackObserver* observer = cc.GetTransportFeedbackObserver();
+        observer->OnTransportFeedback(*static_cast<rtcp::TransportFeedback*>(
+            rtcp.packet.get()));
+        std::vector<PacketFeedback> feedback =
+            observer->GetTransportFeedbackVector();
         SortPacketFeedbackVector(&feedback);
         rtc::Optional<uint32_t> bitrate_bps;
         if (!feedback.empty()) {
@@ -1095,8 +1098,9 @@
       const LoggedRtpPacket& rtp = *rtp_iterator->second;
       if (rtp.header.extension.hasTransportSequenceNumber) {
         RTC_DCHECK(rtp.header.extension.hasTransportSequenceNumber);
-        cc.AddPacket(rtp.header.extension.transportSequenceNumber,
-                     rtp.total_length, PacedPacketInfo());
+        cc.GetTransportFeedbackObserver()->AddPacket(
+            rtp.header.extension.transportSequenceNumber, rtp.total_length,
+            PacedPacketInfo());
         rtc::SentPacket sent_packet(
             rtp.header.extension.transportSequenceNumber, rtp.timestamp / 1000);
         cc.OnSentPacket(sent_packet);
@@ -1126,6 +1130,34 @@
   plot->SetTitle("Simulated BWE behavior");
 }
 
+// TODO(holmer): Remove once TransportFeedbackAdapter no longer needs a
+// BitrateController.
+class NullBitrateController : public BitrateController {
+ public:
+  ~NullBitrateController() override {}
+  RtcpBandwidthObserver* CreateRtcpBandwidthObserver() override {
+    return nullptr;
+  }
+  void SetStartBitrate(int start_bitrate_bps) override {}
+  void SetMinMaxBitrate(int min_bitrate_bps, int max_bitrate_bps) override {}
+  void SetBitrates(int start_bitrate_bps,
+                   int min_bitrate_bps,
+                   int max_bitrate_bps) override {}
+  void ResetBitrates(int bitrate_bps,
+                     int min_bitrate_bps,
+                     int max_bitrate_bps) override {}
+  void OnDelayBasedBweResult(const DelayBasedBwe::Result& result) override {}
+  bool AvailableBandwidth(uint32_t* bandwidth) const override { return false; }
+  void SetReservedBitrate(uint32_t reserved_bitrate_bps) override {}
+  bool GetNetworkParameters(uint32_t* bitrate,
+                            uint8_t* fraction_loss,
+                            int64_t* rtt) override {
+    return false;
+  }
+  int64_t TimeUntilNextProcess() override { return 0; }
+  void Process() override {}
+};
+
 void EventLogAnalyzer::CreateNetworkDelayFeedbackGraph(Plot* plot) {
   std::map<uint64_t, const LoggedRtpPacket*> outgoing_rtp;
   std::map<uint64_t, const LoggedRtcpPacket*> incoming_rtcp;
@@ -1146,7 +1178,9 @@
   }
 
   SimulatedClock clock(0);
-  TransportFeedbackAdapter feedback_adapter(&clock);
+  NullBitrateController null_controller;
+  TransportFeedbackAdapter feedback_adapter(nullptr, &clock, &null_controller);
+  feedback_adapter.InitBwe();
 
   TimeSeries time_series;
   time_series.label = "Network Delay Change";