e04064deb2
Reason for revert:
ScopedMessageData can't be removed just yet. It broke an internal project.
Original issue's description:
> Delete unused class/template ScopedMessageData.
>
> This appears unused since cl https://codereview.webrtc.org/2564333002
>
> BUG=webrtc:6424
>
> Review-Url: https://codereview.webrtc.org/2652663002
> Cr-Commit-Position: refs/heads/master@{#16229}
> Committed: d83fb921a8
TBR=pthatcher@webrtc.org,deadbeef@webrtc.org,nisse@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:6424
Review-Url: https://codereview.webrtc.org/2654753003
Cr-Commit-Position: refs/heads/master@{#16231}
Name: WebRTC URL: http://www.webrtc.org Version: 90 License: BSD License File: LICENSE Description: WebRTC provides real time voice and video processing functionality to enable the implementation of PeerConnection/MediaStream. Third party code used in this project is described in the file LICENSE_THIRD_PARTY.