Revert of Remove some warning suppressions from SocketRocket. (patchset #1 id:1 of https://codereview.webrtc.org/2704383004/ )

Reason for revert:
Breaks buildbot

Original issue's description:
> Remove some warning suppressions from SocketRocket.
>
> These warnings started appearing on a clang update. This CL patches the
> vendored library and removes the supression. We assert on the return as
> we're not equipped to deal with failures there anyway.
>
> BUG=webrtc:6396
> NOTRY=true
>
> Review-Url: https://codereview.webrtc.org/2704383004
> Cr-Commit-Position: refs/heads/master@{#16820}
> Committed: https://chromium.googlesource.com/external/webrtc/+/49990e88fb523901b28d10f2026602cb86528b0d

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:6396

Review-Url: https://codereview.webrtc.org/2714123002
Cr-Original-Commit-Position: refs/heads/master@{#16822}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: e47de1a69c2f574d71728b16825f8cdbf7407481
2 files changed