bf02e2070f
Reason for revert:
Reverting all CLs related to moving the eventlog, as they break Chromium tests.
Original issue's description:
> Fix for RtcEventLog ObjC interface
>
> This moves the RtcEventLog start/stop functions to PeerConnection on the objC interface.
>
> BUG=
> R=tkchin@webrtc.org
>
> Committed: c43bf56ef1
TBR=tkchin@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=
Review-Url: https://codereview.webrtc.org/2110373002
Cr-Commit-Position: refs/heads/master@{#13338}