net: enable SSL_MODE_CBC_RECORD_SPLITTING with OpenSSL.

net: enable SSL_MODE_CBC_RECORD_SPLITTING with OpenSSL.

This enables 1/n-1 record splitting, which we have done with NSS for a
long time. No compat issues are expected with this.

(This does not appear to be a regression from the OpenSSL -> BoringSSL
switch as I don't see that a record splitting patch was previously
included.)

BUG=none

Committed: https://crrev.com/e06bd13395c1ed5d93dd35ff3572a79f08bfbab8
Cr-Commit-Position: refs/heads/master@{#292197}

[agl, 2014-08-27 00:10:16]

agl@chromium.org changed reviewers:
+ davidben@chromium.org

[davidben, 2014-08-27 00:31:10]

Oh, did we never actually turn this on? lgtm

[agl, 2014-08-27 17:41:15]

The CQ bit was checked by agl@chromium.org

[commit-bot: I haz the power, 2014-08-27 17:42:23]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/agl@chromium.org/508803003/1

[commit-bot: I haz the power, 2014-08-27 18:55:43]

Committed patchset #1 (id:1) as 4fd9d2c814ec674af9bebd6e534695dcaec338ae

[commit-bot: I haz the power, 2014-09-10 02:53:10]

Patchset 1 (id:??) landed as
https://crrev.com/e06bd13395c1ed5d93dd35ff3572a79f08bfbab8
Cr-Commit-Position: refs/heads/master@{#292197}