6684fdce93
Reason for revert:
Breaks downstream project.
Original issue's description:
> Adding backward compatibility header
>
> This header will be removed ad soon as downstream projects will be
> updated.
>
> BUG=webrtc:4867
> NOTRY=True
> TBR=kjellander@webrtc.org
>
> Review-Url: https://codereview.webrtc.org/2909923002
> Cr-Commit-Position: refs/heads/master@{#18306}
> Committed: 4fa8a97cc3
TBR=kjellander@webrtc.org,magjed@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:4867
Review-Url: https://codereview.webrtc.org/2908143003
Cr-Commit-Position: refs/heads/master@{#18308}