Reland of TLS CECPQ1 (experimental post-quantum) ciphers. (patchset #1 id:1 of https://codereview.chromium.org/2107273002/ )

Reason for revert:
Sheriff is reverting this patchset on suspicion of adding a new static constructor (string) causing a failure of the "sizes" step of the build.

Link to broken build: https://build.chromium.org/p/chromium/builders/Linux%20x64/builds/21618

Relevant log lines:
FAILED linux-release-64/sizes/chrome-si/initializers: actual 9, expected 7, better lower

Original issue's description:
> Revert of TLS CECPQ1 (experimental post-quantum) ciphers. (patchset #6 id:100001 of https://codereview.chromium.org/2101283004/ )
>
> Reason for revert:
> CroNet does not setup FeatureList. See https://bugs.chromium.org/p/chromium/issues/detail?id=624370
>
> Original issue's description:
> > TLS CECPQ1 (experimental post-quantum) ciphers.
> >
> > These exeperimental and non-standard ciphers are an experiment in
> > post-quantum key exchange for TLS only (not QUIC).  They are not
> > intended as a de facto standard and will be removed from Chrome in a
> > year or two.
> >
> > The key exchange performs a New Hope (post-quantum) and X25519 key
> > exchange in parallel, using the outputs of both to generate the
> > pre-master secret.
> >
> > BUG=
> >
> > Committed: https://crrev.com/7346da96d0fb2651d5b28912572e57dd20e10874
> > Cr-Commit-Position: refs/heads/master@{#402705}
>
> TBR=davidben@chromium.org,mab@google.com
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=
>
> Committed: https://crrev.com/790d5c8eeb83f84ad6d876d77e240375d84e83e3
> Cr-Commit-Position: refs/heads/master@{#402828}

TBR=davidben@chromium.org,mab@google.com,agl@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Review-Url: https://codereview.chromium.org/2110853002
Cr-Commit-Position: refs/heads/master@{#402849}
2 files changed