Revert of Remove remnants of DHE support.

Revert of Remove remnants of DHE support. (patchset #3 id:40001 of https://codereview.chromium.org/2653773003/ )

Reason for revert:
I suspect this breaks https://build.chromium.org/p/chromium.win/builders/Win7%20Tests%20%281%29/builds/62851 since the trybot that ran (and passed) was a Win x64 config (win_chromium_x64_rel_ng). 
The x64 windows bot doesn't break post-commit. 
This was the only CL in the blame list touching encryption IIUC.

Original issue's description:
> Remove remnants of DHE support.
> 
> The admin policy has now expired, so we can unwind all code relating to
> it.
> 
> The deprecated cipher fallback will be removed in a follow-up, tracked
> by https://crbug.com/684730.
> 
> BUG=619194
> 
> Review-Url: https://codereview.chromium.org/2653773003
> Cr-Commit-Position: refs/heads/master@{#446049}
> Committed: https://chromium.googlesource.com/chromium/src/+/6b4943bfc61acc877f92b183b849922edbe85e8d

TBR=svaldez@chromium.org,pastarmovj@chromium.org,davidben@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=619194
Review-Url: https://codereview.chromium.org/2656953002
Cr-Commit-Position: refs/heads/master@{#446249}
Committed: https://chromium.googlesource.com/chromium/src/+/8533a15e602b656ccac9d4779c7ca479c32ed954

[kjellander_chromium, 2017-01-26 06:17:01]

The CQ bit was checked by kjellander@chromium.org

[kjellander_chromium, 2017-01-26 06:17:02]

Created Revert of Remove remnants of DHE support.

[commit-bot: I haz the power, 2017-01-26 06:17:21]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-01-26 06:18:10]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1485411421852920, "parent_rev":
"fa896eed346c508afe00d01cf562fe18e0436600", "commit_rev":
"8533a15e602b656ccac9d4779c7ca479c32ed954"}

[commit-bot: I haz the power, 2017-01-26 06:19:00]

Description was changed from

==========
Revert of Remove remnants of DHE support. (patchset #3 id:40001 of
https://codereview.chromium.org/2653773003/ )

Reason for revert:
I suspect this breaks
https://build.chromium.org/p/chromium.win/builders/Win7%20Tests%20%281%29/bui...
since the trybot that ran (and passed) was a Win x64 config
(win_chromium_x64_rel_ng). 
The x64 windows bot doesn't break post-commit. 
This was the only CL in the blame list touching encryption IIUC.

Original issue's description:
> Remove remnants of DHE support.
> 
> The admin policy has now expired, so we can unwind all code relating to
> it.
> 
> The deprecated cipher fallback will be removed in a follow-up, tracked
> by https://crbug.com/684730.
> 
> BUG=619194
> 
> Review-Url: https://codereview.chromium.org/2653773003
> Cr-Commit-Position: refs/heads/master@{#446049}
> Committed:
https://chromium.googlesource.com/chromium/src/+/6b4943bfc61acc877f92b183b849...

TBR=svaldez@chromium.org,pastarmovj@chromium.org,davidben@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=619194
==========

to

==========
Revert of Remove remnants of DHE support. (patchset #3 id:40001 of
https://codereview.chromium.org/2653773003/ )

Reason for revert:
I suspect this breaks
https://build.chromium.org/p/chromium.win/builders/Win7%20Tests%20%281%29/bui...
since the trybot that ran (and passed) was a Win x64 config
(win_chromium_x64_rel_ng). 
The x64 windows bot doesn't break post-commit. 
This was the only CL in the blame list touching encryption IIUC.

Original issue's description:
> Remove remnants of DHE support.
> 
> The admin policy has now expired, so we can unwind all code relating to
> it.
> 
> The deprecated cipher fallback will be removed in a follow-up, tracked
> by https://crbug.com/684730.
> 
> BUG=619194
> 
> Review-Url: https://codereview.chromium.org/2653773003
> Cr-Commit-Position: refs/heads/master@{#446049}
> Committed:
https://chromium.googlesource.com/chromium/src/+/6b4943bfc61acc877f92b183b849...

TBR=svaldez@chromium.org,pastarmovj@chromium.org,davidben@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=619194

Review-Url: https://codereview.chromium.org/2656953002
Cr-Commit-Position: refs/heads/master@{#446249}
Committed:
https://chromium.googlesource.com/chromium/src/+/8533a15e602b656ccac9d4779c7c...
==========

[commit-bot: I haz the power, 2017-01-26 06:19:01]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/8533a15e602b656ccac9d4779c7c...

[kjellander_chromium, 2017-01-26 06:20:38]

On 2017/01/26 06:19:01, commit-bot: I haz the power wrote:
> Committed patchset #1 (id:1) as
>
https://chromium.googlesource.com/chromium/src/+/8533a15e602b656ccac9d4779c7c...

I should have linked to
https://bugs.chromium.org/p/chromium/issues/detail?id=685352 here.

[kjellander_chromium, 2017-01-26 07:34:12]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/2651303003/ by kjellander@chromium.org.

The reason for reverting is: Did not solve the failing test:
https://build.chromium.org/p/chromium.win/builders/Win7%20Tests%20%281%29/bui....