029f7cccf4
Reason for revert:
API changes in webrtc/sdk/objc/Framework/Headers/WebRTC/RTCFieldTrials.h broke internal project
Original issue's description:
> Enable trendline experiment and bayesian bitrate estimator experiment by default.
>
> BUG=webrtc:6566, webrtc:7415
>
> Review-Url: https://codereview.webrtc.org/2777333003
> Cr-Commit-Position: refs/heads/master@{#17491}
> Committed: 27925de951
TBR=terelius@webrtc.org,stefan@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:6566, webrtc:7415
Review-Url: https://codereview.webrtc.org/2791743002
Cr-Commit-Position: refs/heads/master@{#17495}