Only use paced packets for estimating bitrate probes.

webrtc/video_engine/vie_channel_group.cc

Index: webrtc/video_engine/vie_channel_group.cc
diff --git a/webrtc/video_engine/vie_channel_group.cc b/webrtc/video_engine/vie_channel_group.cc
index f5e83ac36d47bff2cec88bde0f428b8ad8c17387..768365c37169616c41df18f5d5b1d4cc803a3c55 100644
--- a/webrtc/video_engine/vie_channel_group.cc
+++ b/webrtc/video_engine/vie_channel_group.cc
@@ -55,10 +55,11 @@ class WrappingBitrateEstimator : public RemoteBitrateEstimator {
 
   void IncomingPacket(int64_t arrival_time_ms,
                       size_t payload_size,
-                      const RTPHeader& header) override {
+                      const RTPHeader& header,
+                      bool was_paced) override {
     CriticalSectionScoped cs(crit_sect_.get());
     PickEstimatorFromHeader(header);
-    rbe_->IncomingPacket(arrival_time_ms, payload_size, header);
+    rbe_->IncomingPacket(arrival_time_ms, payload_size, header, was_paced);
   }
 
   int32_t Process() override {