Revert "Revert of Use different restrictions of acked bitrate lag depending on operating point. (patchset #3 id:40001 of https://codereview.webrtc.org/2542083003/ )"

This reverts commit 2e59a02dd49c122a0e848baaebb7a38faf20dec4.

BUG=webrtc:5079

Review-Url: https://codereview.webrtc.org/2553613002
Cr-Original-Commit-Position: refs/heads/master@{#15425}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: db752f9b373f58f0b03d8c1eea11b60460aaca6d
4 files changed