Start probes only after network is connected.

webrtc/modules/congestion_controller/probe_controller.h

Index: webrtc/modules/congestion_controller/probe_controller.h
diff --git a/webrtc/modules/congestion_controller/probe_controller.h b/webrtc/modules/congestion_controller/probe_controller.h
index efcc2a1d4a39ab27ebdf10e22d91a4484d64ebf3..eb29eacf0d40ecdd644f5ec1689fc93eb77f8313 100644
--- a/webrtc/modules/congestion_controller/probe_controller.h
+++ b/webrtc/modules/congestion_controller/probe_controller.h
@@ -17,6 +17,10 @@
 #include "webrtc/common_types.h"
 #include "webrtc/modules/pacing/paced_sender.h"
 
+namespace rtc {
+struct NetworkRoute;
+}
+
 namespace webrtc {
 
 class Clock;
@@ -28,9 +32,12 @@ class ProbeController {
  public:
   ProbeController(PacedSender* pacer, Clock* clock);
 
-  void SetBitrates(int min_bitrate_bps,
-                   int start_bitrate_bps,
+  void SetBitrates(int start_bitrate_bps,
+                   int min_bitrate_bps,
                    int max_bitrate_bps);
+
+  void OnNetworkRouteChanged(const rtc::NetworkRoute& route);
+
   void SetEstimatedBitrate(int bitrate_bps);
 
  private:
@@ -52,6 +59,7 @@ class ProbeController {
   int min_bitrate_to_probe_further_bps_ GUARDED_BY(critsect_);
   int64_t time_last_probing_initiated_ms_ GUARDED_BY(critsect_);
   int estimated_bitrate_bps_ GUARDED_BY(critsect_);
+  int start_bitrate_bps_ GUARDED_BY(critsect_);
   int max_bitrate_bps_ GUARDED_BY(critsect_);
   int64_t last_alr_probing_time_ GUARDED_BY(critsect_);