Relanding "Pass time constant to bwe smoothing filter."

webrtc/voice_engine/voe_codec_impl.cc

Index: webrtc/voice_engine/voe_codec_impl.cc
diff --git a/webrtc/voice_engine/voe_codec_impl.cc b/webrtc/voice_engine/voe_codec_impl.cc
index 8ac24da4e7974ec893987b531d048799f3299937..b2fd08d599b60cb17cf793cea53aca5cdb0c90b5 100644
--- a/webrtc/voice_engine/voe_codec_impl.cc
+++ b/webrtc/voice_engine/voe_codec_impl.cc
@@ -137,8 +137,9 @@ int VoECodecImpl::SetBitRate(int channel, int bitrate_bps) {
     _shared->SetLastError(VE_NOT_INITED, kTraceError);
     return -1;
   }
+  constexpr int64_t kDefaultProbingIntervalMs = 3000;
   _shared->channel_manager().GetChannel(channel).channel()->SetBitRate(
-      bitrate_bps);
+      bitrate_bps, kDefaultProbingIntervalMs);
   return 0;
 }