Update bitrate only when we have incoming packet.

webrtc/call/congestion_controller.cc

Index: webrtc/call/congestion_controller.cc
diff --git a/webrtc/call/congestion_controller.cc b/webrtc/call/congestion_controller.cc
index 08cdb11d2fbaf66a385429a66fe6e197cbef4200..793c70c970724a772f7d9234d8de14a24bcb427f 100644
--- a/webrtc/call/congestion_controller.cc
+++ b/webrtc/call/congestion_controller.cc
@@ -82,11 +82,6 @@ class WrappingBitrateEstimator : public RemoteBitrateEstimator {
     return rbe_->LatestEstimate(ssrcs, bitrate_bps);
   }
 
-  bool GetStats(ReceiveBandwidthEstimatorStats* output) const override {
-    CriticalSectionScoped cs(crit_sect_.get());
-    return rbe_->GetStats(output);
-  }
-
   void SetMinBitrate(int min_bitrate_bps) {
     CriticalSectionScoped cs(crit_sect_.get());
     rbe_->SetMinBitrate(min_bitrate_bps);
@@ -193,6 +188,12 @@ CongestionController::~CongestionController() {
 void CongestionController::SetBweBitrates(int min_bitrate_bps,
                                           int start_bitrate_bps,
                                           int max_bitrate_bps) {
+  // TODO(holmer): We should make sure the default bitrates are set to 10 kbps,
+  // and that we don't try to set the min bitrate to 0 from any applications.
+  // The congestion controller should allow a min bitrate of 0.

[pbos-webrtc, 2016/02/16 13:44:34]

Should this clamp to start and max as well? All might be <10 initially.

[stefan-webrtc, 2016/02/16 14:57:16]

Done.

+  const int kMinBitrateBps = 10000;
+  if (min_bitrate_bps < kMinBitrateBps)
+    min_bitrate_bps = kMinBitrateBps;
   if (start_bitrate_bps > 0)
     bitrate_controller_->SetStartBitrate(start_bitrate_bps);
   bitrate_controller_->SetMinMaxBitrate(min_bitrate_bps, max_bitrate_bps);