Reason for revert: Fails in the waterfall here: https://build.chromium.org/p/client.webrtc/builders/Win32%20Debug/builds/7832/steps/rtc_media_unittests/logs/stdio Original issue's description: > Remove SendPacer from ViEEncoder > > This CL moves the logic where the ViEEncoder pause if the pacer is full to the BitrateController. If the queue is full, the controller reports a bitrate of zero to Call (and BitrateAllocator) > > BUG=webrtc:5687 > > Committed: https://crrev.com/857c5ccdb56e4c94196f7c6227abd5993c95abe2 > Cr-Commit-Position: refs/heads/master@{#12620} TBR=stefan@webrtc.org,mflodman@webrtc.org # Skipping CQ checks because original CL landed less than 1 days ago. NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true BUG=webrtc:5687 Review-Url: https://codereview.webrtc.org/1947853002 Cr-Commit-Position: refs/heads/master@{#12621}