After last update in a chromium repo ffmpeg support for MSVC was broken.
So for now we will freeze rolling of ffmpeg and continue it after
we'll restore of MSVC or we'll find a way around to keep MSVC support
in the WebRTC.
Change-Id: Ie7de7e6d367946f3ad77a81d6121dd704a56ca24
Bug: webrtc:9213
Reviewed-on: https://webrtc-review.googlesource.com/78402
Reviewed-by: Patrik Höglund <phoglund@webrtc.org>
Commit-Queue: Artem Titov <titovartem@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#23379}