This cl removed ViEEncoder::SetNetworkStatus. Instead the PacedSender will report that frames can not be sent when the network is down and the BitrateController will report an estimated available bandwidth of 0 bps. BUG=webrtc:5687 NOTRY=True Review-Url: https://codereview.webrtc.org/1932683002 Cr-Commit-Position: refs/heads/master@{#12699}