Reland: Fix race / crash in OnNetworkRouteChanged().

webrtc/modules/congestion_controller/BUILD.gn

Index: webrtc/modules/congestion_controller/BUILD.gn
diff --git a/webrtc/modules/congestion_controller/BUILD.gn b/webrtc/modules/congestion_controller/BUILD.gn
index 758fba59d86f156dd76a1353c15d8cb6513c5fcb..1069d624ffefac697b6e74dea0ac63ceb359729d 100644
--- a/webrtc/modules/congestion_controller/BUILD.gn
+++ b/webrtc/modules/congestion_controller/BUILD.gn
@@ -18,6 +18,8 @@ rtc_static_library("congestion_controller") {
     "probe_bitrate_estimator.h",
     "probe_controller.cc",
     "probe_controller.h",
+    "transport_feedback_adapter.cc",
+    "transport_feedback_adapter.h",
   ]
 
   # TODO(jschuh): Bug 1348: fix this warning.
@@ -32,6 +34,5 @@ rtc_static_library("congestion_controller") {
   deps = [
     "../bitrate_controller",
     "../pacing",
-    "../remote_bitrate_estimator",
   ]
 }