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..9b71b1c4e382cecb71236e3112181c0d8858f5af 100644
--- a/webrtc/voice_engine/voe_codec_impl.cc
+++ b/webrtc/voice_engine/voe_codec_impl.cc
@@ -138,7 +138,7 @@ int VoECodecImpl::SetBitRate(int channel, int bitrate_bps) {
     return -1;
   }
   _shared->channel_manager().GetChannel(channel).channel()->SetBitRate(
-      bitrate_bps);
+      bitrate_bps, 0);

[minyue-webrtc, 2016/11/28 12:00:00]

Should we give something more meaningful? "0" seems unexpected.

[minyue-webrtc, 2016/11/28 13:14:42]

?

[michaelt, 2016/11/28 13:30:09]

Oh sorry missed that one. This function is not used at all. I think we can
remove the function. But we should do it in a different CL.

I could use 
constexpr int64_t kDefaultProbingIntervalMs = 3000;
To make this a bit more clear here.

   return 0;
 }