1f53452ca6
Uses current libvpx (slightly older) thresholds to maintain a larger window of stable QP, but maintains the newer H264 thresholds. BUG= R=glaznev@webrtc.org, mflodman@webrtc.org Review-Url: https://codereview.webrtc.org/1966213002 Cr-Commit-Position: refs/heads/master@{#12734}